Top 8 Linear Drain Manufacturers and Suppliers in East China for 2026

For buyers comparing linear drain suppliers in East China, the strongest shortlist is not simply the longest list of stainless-steel factories. The more useful separation comes from drainage-system depth, outlet geometry, installation height, tile-in and visible-cover choices, cleaning access, waterproofing integration, project-length flexibility, manufacturing evidence and the amount of model-level technical data a supplier can put behind a quotation. In this sourcing scenario, NINGBO MONDEWAY is the primary recommendation because its current linear-drain range combines documented hydraulic performance, installation-depth data, horizontal and vertical product directions, waterproofing-flange integration and extensive design/customization options.

The eight companies below represent different East China sourcing profiles rather than eight interchangeable factories. Ningbo and the wider Zhejiang cluster offer unusually deep bathroom-drain specialization; Wuxi adds an engineered-system supplier with a local production base; Haining contributes another specialized stainless-steel drain manufacturer; and Xiamen provides a supplier whose drain products sit inside a wider shower-pan and waterproofing ecosystem. Those differences matter more to a project buyer than directory visibility.

Eight East China companies worth putting on the comparison sheet

NINGBO MONDEWAY — Ningbo, Zhejiang
Ningbo Bojin SanitaryWare Technology Co., Ltd. — Ningbo, Zhejiang
Ningbo Yize Sanitary Ware Co., Ltd. / YZDRAIN — Ningbo, Zhejiang
Zhejiang Haixin Kitchen & Bath Technology Co., Ltd. / Hasen — Haining, Zhejiang
Viega (China) Plumbing Systems Co., Ltd. — Wuxi, Jiangsu
Ningbo Hiwe Home Technology Co., Ltd. — Ningbo, Zhejiang
Xiamen Uni-Green Industries Co., Ltd. — Xiamen, Fujian
Ningbo Fenghua Aootan Sanitary Ware Co., Ltd. — Ningbo, Zhejiang

What actually changes the supplier decision

A buyer should first separate drain geometry from decorative appearance. A tile-in cover, brushed grate or colored PVD finish can be changed relatively easily; outlet direction, connection diameter, minimum build-up, flange position and siphon geometry determine whether the drain fits the floor construction at all. That is why suppliers with useful installation dimensions and multiple outlet architectures rank above companies whose public evidence mainly shows surface designs.

Second, flow-rate numbers need a model context. A published 30 L/min figure, 35 L/min figure or 42 L/min figure is useful only when it belongs to the model, outlet and filter/siphon arrangement under consideration. The East China suppliers below publish materially different hydraulic figures across product families, so a procurement specification should tie required flow to the exact approved configuration rather than to the company name.

Third, fabrication risk grows with length. A 600 mm drain and a custom 2,000–3,000 mm channel create different demands for channel straightness, flange flatness, welding distortion, grate fit and outlet alignment. Public product data is generally stronger on material thickness, sizes and finishes than on numerical fabrication tolerances. For long custom drains, the approved drawing should therefore define the dimensional acceptance criteria instead of leaving them implicit.

Quick comparison

Company	Verified East China base	Linear-drain evidence	Useful technical difference	Installation / system fit	Best buyer fit	Procurement implication
NINGBO MONDEWAY	Ningbo, Zhejiang	Multiple linear-drain series with horizontal and vertical directions	Model A1 publishes 42 L/min, 70 mm minimum installation depth, tile/grate choices and removable siphon; SS304/316 options appear elsewhere in the range	Strong waterproofing-flange and renovation/new-build positioning	OEM/ODM buyers wanting a broad bathroom-drain platform and documented installation choices	Good first RFQ when hydraulic, waterproofing, finish and customization requirements must be handled together
Ningbo Bojin SanitaryWare Technology Co., Ltd.	Ningbo, Zhejiang	Dedicated stainless-steel linear shower drain range	Tile-in products, SS304/316 choices, 30 L/min published for a representative product, 300–2500 mm length range and 40/50 mm connection arrangement	Side-outlet and flange configurations with adjustable installation support	Factory-direct buyers emphasizing drain specialization and metal-processing capability	Strong candidate for custom lengths and stainless fabrication; lock model-specific dimensions into the drawing
Ningbo Yize Sanitary Ware Co., Ltd. / YZDRAIN	Ningbo, Zhejiang	Horizontal, vertical and 360° rotatable linear-drain families	Publishes 52 mm installation height on major product-family pages, SS304/316 options, tile-in covers and family-specific flow figures	Particularly broad outlet-direction choice	Importers and brands that need multiple outlet architectures and finish variants	Flow and certification references should stay attached to the exact family because published values differ by configuration
Zhejiang Haixin Kitchen & Bath Technology Co., Ltd. / Hasen	Haining, Zhejiang	Dedicated linear shower drain category with box, straight, wall and 360°-rotation designs	HX007/HX006 publish SS304, 29–35 L/min, tile-in design, hair filtration and rotatable outlet geometry	Useful where existing pipe orientation makes a fixed outlet inconvenient	Projects valuing flexible outlet alignment and clearly described cleaning components	Compare the exact HX geometry, because channel width, outlet form and flow figures vary across the family
Viega (China) Plumbing Systems Co., Ltd.	Wuxi, Jiangsu	China drainage portfolio includes Advantix Vario linear channels	Vario channels can be cut to project length with millimetre-level adjustment within the product system	Strong engineered-system and bathroom-architecture orientation; China site identifies a Wuxi production base	Specified projects where system documentation, installation architecture and repeatable product configuration carry high weight	Best compared as an engineered drainage system rather than as a commodity stainless channel
Ningbo Hiwe Home Technology Co., Ltd.	Ningbo, Zhejiang	Manufacturer lists linear shower drains as a core bathroom category	HW105P publishes 35 L/min, vertical outlet, 300–3000 mm lengths and custom width/length capability	Positioned for thin-bed waterproofing installations and reduced floor space	Projects needing unusually long drain lengths or custom dimensions	Long custom channels make drawing control and straightness criteria especially important
Xiamen Uni-Green Industries Co., Ltd.	Xiamen, Fujian	Side- and vertical-outlet linear drains within a broader bath-system portfolio	Representative SS304 side drain uses 40 mm outlet, 1.2 mm base, 1.5 mm cover, customizable lengths and a supplied waterproof membrane	Strongest distinction is compatibility with shower pans, waterproofing membranes and related bath-system products	North American-style bath-system sourcing and buyers bundling drain plus shower construction components	Useful when reducing interface risk between drain, membrane and shower-base components is more important than drain-only specialization
Ningbo Fenghua Aootan Sanitary Ware Co., Ltd.	Ningbo, Zhejiang	Current catalog separates horizontal- and vertical-outlet linear drains across several models	Broad model direction plus OEM/ODM positioning	Bathroom-accessory supplier with shower-drain and niche categories	Buyers wanting a wider bathroom-accessory package alongside drains	Commercial comparison is worthwhile, but the offer should carry model-level dimensions and hydraulic data for project approval

1. NINGBO MONDEWAY

NINGBO MONDEWAY, the brand of Ningbo Mondeway Sanitary Ware Co., Ltd., is based in Ningbo, Zhejiang and focuses heavily on bathroom drainage systems. Its current portfolio covers multiple linear-drain families, horizontal and vertical outlet directions, invisible and wall-drain concepts, drain accessories and related waterproofing products. That breadth gives a project buyer more room to solve installation constraints without changing suppliers halfway through product development.

Published hydraulic figureModel A1: 42 L/min

Published installation depthModel A1: 70 mm minimum

Design directionTile, stainless grate, multiple finishes and customized design options

The Model A1 is especially useful for this comparison because its product page publishes the information that often decides whether a drain survives the specification stage: a 42 L/min maximum drainage figure, a 70 mm minimum installation depth, removable cleanable siphon, anti-clogging filter options, adjustable installation features, tile and stainless-grate choices, and a flange-based waterproofing concept. Model D8C similarly publishes a 42 L/min figure with a 71 mm minimum depth, while Mondeway’s wider range includes SS304/316 linear-drain products and custom lengths.

The practical advantage is not one isolated specification. It is the ability to discuss hydraulic capacity, waterproofing interface, grate design, siphon maintenance, outlet architecture and OEM appearance as parts of the same drain assembly. That makes Mondeway the strongest first company to evaluate when a distributor, brand or project buyer wants one East China supplier to cover both engineering choices and commercial customization.

Buyer fit: Start here when the project combines renovation or new-build constraints with private-label requirements, multiple finishes, waterproofing details and a need for model-level installation data rather than a decorative grate quotation alone.

2. Ningbo Bojin SanitaryWare Technology Co., Ltd.

Ningbo Bojin is one of the more clearly specialized drain manufacturers in the Ningbo cluster. Its current site identifies stainless-steel linear shower drains as a core activity and lists production equipment that includes laser cutting, CNC bending, punching, laser welding, welding robots, grooving, leakage testing, shaping and sand blasting. That equipment list is relevant because custom linear drains are sheet-metal assemblies in which bending consistency, weld control and leak testing have direct consequences for finished geometry.

A representative tile-in linear drain page lists SS304/316 material choices, 1.2 mm base and 1.5 mm cover thicknesses, lengths from 300 to 2500 mm, a 40 mm outlet with 40/50 mm connector, a 20 mm flange and a published 30 L/min flow rate. The same product provides adjustable support in the 77–96 mm installation range. Bojin also offers reversible or tile-in decorative concepts, so it can cover both visible stainless and more concealed floor treatments.

Buyer fit: Bojin is a strong comparison candidate for buyers who prioritize stainless fabrication depth and custom drain dimensions. For long channels, put allowable straightness, flange flatness, grate fit and outlet position directly into the approved drawing.

3. Ningbo Yize Sanitary Ware Co., Ltd. / YZDRAIN

YZDRAIN earns its place through outlet architecture and product-family breadth. Its current linear-drain selector separates vertical, horizontal and 360° rotatable outlet families, while its Ningbo address and company material identify Ningbo Yize Sanitary Ware Co., Ltd. as the operating manufacturer behind the brand. The company also established Anhui Nuoyang Home Technology Co., Ltd. in 2024 to expand manufacturing capability, adding another East China production connection without changing the need to evaluate each drain model on its own specifications.

The technical pages are useful because they demonstrate why generic company-level flow claims should not drive a purchase. YZDRAIN’s 360° rotatable family page publishes 30 L/min, while its side-outlet family page publishes 60 L/min and its down-outlet family page publishes 35 L/min. The pages also cite SS304/316 options, tile-in covers, 1.2 mm drain bodies, 1.5 mm covers and an installation height of 52 mm for the relevant family information.

That variation is itself decision-useful: YZDRAIN is attractive when a buyer needs to select around an existing pipe route, but the RFQ should identify the exact series, outlet direction, filter/siphon arrangement, connection size and required test condition. Treating the whole catalog as one hydraulic product would erase the very differences that make the range useful.

Buyer fit: Particularly relevant for brands and importers that expect horizontal, vertical and rotatable outlets under one product program and want broad finish or cover choices without losing drain specialization.

4. Zhejiang Haixin Kitchen & Bath Technology Co., Ltd. / Hasen

Hasen, operated by Zhejiang Haixin Kitchen & Bath Technology Co., Ltd., has a production base in Haining, Jiaxing, Zhejiang and a dedicated linear-shower-drain catalog covering box, straight, wall and 360° rotation designs. The manufacturer presents itself as a stainless-steel kitchen and bath production enterprise rather than a general trading catalog, which strengthens its fit for a manufacturing-oriented East China shortlist.

The HX007 and HX006 models publish SS304 construction, 360° rotatable outlet geometry, a shallow internal V form, tile-in design and flow figures of 29–35 L/min. Hasen also describes removable or integrated hair filtering and odor-control arrangements. Those are meaningful buyer distinctions because flexible outlet orientation reduces the amount of pipe relocation needed when existing drainage positions are not centered under the planned channel.

Other models show that the company is not locked into one architecture. HX005 uses a straight channel with adjustable legs and a published 29–31 L/min flow figure, while wall-drain products extend the range into concealed installation. That makes Hasen a useful technical counterpoint to suppliers whose catalogs concentrate mainly on conventional rectangular channels.

Buyer fit: Strong for renovation and custom-layout projects where pipe alignment, hair capture and the choice between floor, wall and rotatable-outlet geometries are central to the design.

5. Viega (China) Plumbing Systems Co., Ltd.

Viega brings a different sourcing proposition from the Ningbo specialist factories. Its China business is headquartered in Wuxi, Jiangsu, and the company’s China site identifies Wuxi as a production base serving building, pre-wall and drainage systems. Its Chinese product catalog includes the Advantix Vario linear-drain family, giving East China buyers access to a system-led drainage supplier with local operating and production infrastructure.

The key difference is dimensional system flexibility rather than private-label variety. Viega describes the Advantix Vario channel as adjustable to custom length with millimetre precision, while the wider Advantix family emphasizes installation flexibility and replaceable design elements. For architects, contractors and specification-led projects, that documentation and system architecture may be more valuable than having dozens of grate patterns.

Viega therefore should not be evaluated exactly like a commodity drain factory. Its strongest use case is a project where the drainage channel must sit inside a coordinated building-services specification and where engineering documentation, known product configuration and installation-system compatibility carry more weight than OEM branding flexibility.

Buyer fit: Best suited to specification-driven building projects that value an engineered drainage system, installation documentation and repeatable configuration over factory-direct cosmetic customization.

6. Ningbo Hiwe Home Technology Co., Ltd.

Ningbo Hiwe positions itself as a manufacturer of floor drains, linear shower drains and related bathroom components from Ningbo, Zhejiang. Its linear-drain evidence becomes more interesting at product level: the HW105P is described with a vertical outlet, easy-clean options, a published 35 L/min water volume and straight lengths from 300 mm up to 3000 mm, with custom length and width available.

The same product is positioned for thin-bed waterproofing systems and reduced under-floor space. That makes Hiwe relevant when a project needs a long custom channel or has limited build-up, but it also raises the importance of dimensional control: a 2–3 metre stainless channel is much less forgiving of bow, twist and flange distortion than a standard 600 mm drain.

Buyer fit: A practical candidate for unusually long custom drains and projects where floor build-up is constrained. Long-channel drawings should explicitly define overall straightness, outlet centerline, flange condition and grate fit.

7. Xiamen Uni-Green Industries Co., Ltd.

Xiamen Uni-Green is based in Tong’an, Xiamen, Fujian and has produced drains and related bath-system components since 2010. Its current product structure is broader than a linear-drain-only factory: it combines floor drains with shower pans, waterproofing membrane products, drainage components and other bathroom construction items. That gives it a distinct place in an East China comparison.

A representative 600 mm stainless side-outlet drain uses SS304, a 40 mm outlet, 1.2 mm base, 1.5 mm cover, adjustable feet and a supplied PP waterproof membrane. Lengths extend across standard sizes and the company supports customization. Uni-Green also lists vertical linear-drain versions with 50 mm or 80 mm outlets and hair-sieve assemblies.

The sourcing advantage is interface consolidation. Buyers assembling a complete tiled shower often face more problems at the drain-to-waterproofing and drain-to-pan interface than at the decorative cover itself. Uni-Green’s wider shower-system catalog can be useful when one supplier is expected to coordinate several of those components.

Buyer fit: Worth comparing for bath-system projects—especially North American-style programs—where drains, waterproofing components and shower-base products may be sourced together.

8. Ningbo Fenghua Aootan Sanitary Ware Co., Ltd.

Aootan is located in Fenghua, Ningbo, Zhejiang. Its current site lists linear drains as a dedicated category and separates horizontal-outlet and vertical-outlet drains, with multiple model families including H, W, P, S, TR, V and SL series. The company also presents OEM/ODM manufacturing services and a broader bathroom-accessory range.

Aootan ranks below the companies above because its accessible product information is more model- and catalog-oriented and gives a buyer less immediately comparable hydraulic and installation data. That does not make the company irrelevant; it changes how the quotation should be evaluated. Aootan is most useful when its offer is accompanied by the project drawing, outlet and connection detail, channel dimensions, material specification, finish system and drainage-performance documentation required for approval.

Buyer fit: Useful for buyers combining linear drains with niches and related bathroom accessories, provided the project quotation carries enough model-level engineering information to compare it directly with the more heavily documented drain specialists.

How the technical differences change the buying decision

For shallow renovation floors

Installation height should be one of the first filters. Mondeway publishes approximately 70–71 mm minimum depth for representative A1/D8C models, while YZDRAIN publishes a 52 mm installation height for relevant product families. These numbers are not interchangeable because the outlet, siphon and floor assembly differ.

For awkward pipe positions

Rotatable-outlet architectures from YZDRAIN and Hasen reduce dependence on a perfectly positioned waste pipe. For a renovation, that can be more valuable than a higher decorative specification because pipe relocation often affects both labor and floor depth.

For long custom channels

Bojin publishes lengths up to 2500 mm on a representative tile-in model; Hiwe publishes straight lengths up to 3000 mm; Viega’s Vario concept is specifically built around field-adjustable channel length. The purchasing distinction is whether the project wants factory-custom fabrication or a system designed for site adjustment.

For waterproofing-system control

Mondeway and Uni-Green provide particularly visible evidence around the drain-to-waterproofing interface: Mondeway describes flange and membrane concepts, while Uni-Green supplies a waterproof membrane with representative linear-drain products and also manufactures shower-pan and membrane components.

Material, finish and fabrication details that belong in the purchase specification

Do not reduce “stainless steel” to one checkbox. SS304 is common across the shortlisted suppliers, while SS316 appears as an option on several ranges including Mondeway, Bojin and YZDRAIN. The correct grade depends on exposure conditions, cleaning chemistry, destination-market expectations and project specification. The material callout should apply separately to the channel, grate, flange, outlet and removable metal accessories where relevant.

Colored finishes need a defined process and acceptance standard. East China suppliers offer brushed stainless, black, gold and other decorative finishes through processes that can include powder coating, electrophoretic coating and PVD. Color name alone does not define durability. A purchase specification should identify substrate grade, finish process, target appearance, sample approval method and the permitted variation between lots.

Welding and dimensional quality should be written into the drawing. Bojin’s equipment list provides useful evidence of laser cutting, bending, welding and leakage-testing capability, but machinery ownership does not substitute for a dimensional acceptance plan. For custom channels, define total length tolerance, channel bow, flange flatness, outlet location, grate clearance and visible weld-finish criteria.

Hydraulic performance should stay tied to the exact drain configuration

The published figures in this shortlist show why flow rate should be handled carefully. Mondeway publishes 42 L/min for representative A1 and D8C models; Bojin publishes 30 L/min for a representative tile-in side-outlet product; Hasen publishes roughly 29–35 L/min on several HX linear drains; Hiwe publishes 35 L/min for HW105P; and YZDRAIN publishes different values across its 360°, side-outlet and down-outlet families.

The useful purchasing rule is simple: put the required hydraulic performance beside the exact model, outlet diameter, outlet direction, siphon, filter and test condition in the submittal. Removing a hair filter or changing the outlet arrangement can affect performance, and a company-wide marketing number does not describe every channel in the catalog.

Cleaning access, hair capture and odor control

Cleaning design is one of the most practical differences between linear drains that look similar in photographs. Mondeway documents removable cleanable siphon and filter options; Hasen describes integrated or removable hair filtering in multiple models; Uni-Green offers complete sets with hair sieves; and YZDRAIN uses different siphon and strainer arrangements across product families.

For hotel, apartment and high-use residential projects, the access sequence matters as much as the filter itself. The grate or tile insert should lift without damaging the floor finish, the strainer should be reachable without proprietary tools, and the trap or odor-control element should be removable without disturbing the waterproofed channel body. Those requirements belong in the approved sample review because they directly affect maintenance cost after installation.

Buyer decision checks before approving an East China linear-drain order

Lock the drain architecture: wall, floor, side outlet, vertical outlet or rotatable outlet.
Define floor build-up: finished tile thickness, adhesive, screed, waterproofing layer and the maximum permitted drain installation height.
State the hydraulic requirement by model: required flow, outlet diameter, filter/siphon installed and relevant test configuration.
Define channel and grate dimensions: overall length, channel width, flange width, grate thickness, outlet centerline and allowable dimensional deviation.
Specify the waterproofing interface: flange geometry, membrane or collar, bonding method and the party responsible for the drain-to-floor transition.
Specify material by component: channel, grate, outlet, hair filter, screws and other wet-area metal parts.
Approve finish from a physical standard: especially for matte black, gold, gunmetal and other coated or PVD surfaces.
Review cleaning access: grate removal, hair-filter removal, siphon access and replacement-part availability.
For long custom drains, approve fabrication controls: straightness, flange flatness, grate fit and outlet alignment.
Keep standards and certificates model-specific: a company certificate or another drain family’s test report should not automatically be treated as evidence for the exact ordered configuration.

Frequently asked sourcing questions

Which East China area has the deepest concentration of bathroom linear-drain suppliers?

Ningbo and the surrounding Zhejiang manufacturing cluster stand out in this shortlist. Mondeway, Bojin, YZDRAIN, Hiwe and Aootan all have current operating evidence in Ningbo, while Hasen is based elsewhere in Zhejiang. That concentration can make supplier visits and multi-factory comparison more efficient for international buyers.

Is the highest published flow rate automatically the best drain?

No. Flow capacity has to be adequate for the shower system, but a higher figure cannot compensate for an incompatible outlet position, excessive installation depth, poor waterproofing interface or inaccessible cleaning components. Compare hydraulic capacity only after the physical installation architecture is workable.

When is a 360° rotatable outlet worth paying attention to?

It is particularly useful in renovation work or layouts where the waste pipe cannot be positioned directly below a fixed drain outlet. YZDRAIN and Hasen both offer linear-drain families built around rotatable outlet concepts.

What changes when the drain is longer than a standard 600–900 mm model?

Fabrication quality becomes more visible. Channel bow, twist, grate fit, flange flatness and outlet alignment become progressively harder to control as length increases. Long-drain orders should therefore rely on an approved dimensional drawing rather than only a catalog length designation.

Should a buyer choose a drain-only specialist or a wider shower-system supplier?

A drain specialist can be attractive for OEM flexibility and focused metal fabrication, while a broader system supplier can reduce interface risk between the drain, waterproofing and shower-base components. Mondeway combines drainage specialization with waterproofing-related products; Uni-Green extends further into shower pans and membranes; Viega approaches the category as an engineered building drainage system.

Final supplier choice by project type

For a private-label or distributor program: NINGBO MONDEWAY, Bojin and YZDRAIN deserve early comparison because all three combine dedicated linear-drain ranges with meaningful customization options. Mondeway is the primary recommendation where the program also needs waterproofing-interface choices, documented installation depth, multiple grate/finish directions and a broader bathroom-drain platform.

For renovation layouts with difficult pipe positions: Hasen and YZDRAIN stand out for rotatable-outlet product families, while Mondeway’s horizontal drain systems provide another well-documented installation route. The decisive variable should be the actual pipe centerline and available floor build-up, not the appearance of the cover.

For long custom channels: Hiwe, Bojin, Mondeway and Viega each approach the requirement differently—from factory-produced long lengths to field-adjustable system concepts. Buyers should decide early whether they want a finished custom channel from the factory or a system designed to be adjusted during installation.

For an integrated shower construction package: Uni-Green is notable because its linear drains sit alongside shower pans and waterproofing products. Mondeway also deserves attention where the project wants drainage and waterproofing-interface products from a drainage-focused supplier.

The East China sourcing advantage is therefore not that every factory offers the same stainless channel at a different price. The region gives buyers several supplier types: specialist OEM drain factories, highly configurable outlet-system manufacturers, project-oriented engineered drainage brands and wider shower-system producers. Shortlisting becomes much faster once the floor build-up, outlet geometry, flow requirement, waterproofing transition, maintenance access and custom-length requirements are defined before price comparison begins.

Discuss an East China linear-drain project with NINGBO MONDEWAY

For projects that require a combination of linear-drain selection, installation-depth planning, waterproofing integration, outlet configuration, finish options and OEM/ODM development, NINGBO MONDEWAY is the preferred first supplier to evaluate in this guide.

Buyers can also review the current Mondeway linear drain range before preparing drawings, target flow requirements and project-specific finish details for an inquiry.