Importing custom shower enclosures from China is a well-worn path. Thousands of hotel projects, retail chains, and e-commerce brands buy their glass this way every year, and the ones who do it well are not lucky. They run a process: they specify before they ask for prices, they buy from workshops rather than intermediaries, and they lock tests and paperwork into the order before the deposit moves.
The failure modes are just as predictable. Panels arrive 2mm off the wall opening because someone measured from an old plan. A container of semi-frameless units shows up with rollers that seize after a season because no cycle test was ever requested. Certificates exist but live in an email thread instead of the carton, so customs holds the shipment. Every one of these is preventable at the purchase-order stage.
This guide walks through the full sourcing process step by step, from writing the specification to setting up after-sales before the shipment lands. It is written for importers, wholesale buyers, and project contractors bringing custom shower enclosures in from China at commercial volume.
Key Takeaways
- Write the specification first: glass thickness from 6mm to 12mm, door configuration, acabado de hardware, and dimensions taken from current floor plans.
- Shortlist manufacturers that process their own glass, not assemblers. Ask for the workshop list and the staff breakdown.
- Send drawings and expect engineering feedback, not a bare quote. DFM review on paper is free; the same review on a hotel wall is not.
- Approve a sample before mass production. KJ Bath quotes about 15 working days for samples and 30 for a first run, shortening to 20-25 on repeats.
- Put the five QC tests into the order: tempering verification, impacto, caída de embalaje, salt spray, and the 100,000-cycle push-pull test.
- Require SGCC and CE certificate copies, the QC report, an installation manual, and a spare parts pack to ship with the goods.
- Structure payment as a 30% deposit with 70% due against pre-shipment inspection so your leverage matches the risk.
Paso 1: Define the Specification Before You Contact Anyone
Suppliers quote accurately against specifications and vaguely against intentions. Before the first inquiry, write down four things. Primero, the door configuration: sin marco, semi-sin marco, or framed; corredizo, pivote, or fixed screen. Second, espesor del vidrio, which for commercial enclosures runs from 6mm to 12mm, with frameless designs generally needing 10mm as a minimum and 12mm for wide panels. Third, the hardware finish, since chrome, negro mate, oro cepillado, and gunmetal each carry different lead times and price points. Fourth, dimensions taken from the current floor plans, not from an older renovation set.
If you are starting from a room type rather than a single bathroom, note the number of variants. A ten-unit apartment retrofit with three bathroom layouts is a different order from a two-hundred-room hotel with one repeated module, and the factory will price them differently. Buyers who arrive with this one-page specification get useful quotes in days; buyers who ask “how much for a shower enclosure” get a range so wide it tells them nothing.
When the terminology in supplier replies starts blurring together, nuestro shower enclosure terminology glossary covers the 30 terms that appear in spec sheets and quotes.
Paso 2: Shortlist Manufacturers, Not Intermediaries
China’s shower enclosure industry clusters heavily in Foshan, Guangdong, and the gap between a real factory and an assembly shop is visible in three questions. Do you temper your own glass, and from which original sheets? Which workshops are inside your walls? What is your staff breakdown by function?
KJ Bath’s own answers illustrate the standard: four workshops covering aluminum processing, glass cutting and tempering, asamblea, and automated packaging; Xinyi original glass sheets fed through an in-house tempering line; 151 staff with 120 in production and a 12-person R&equipo D; about 1,000 sets of monthly output across a 15,000 sqm plant. The numbers reconcile, which is what you are testing for. A supplier whose capacity story cannot be reconciled on one page will not reconcile on a container either. For the full vetting framework, see our checklist on what to look for in a shower enclosure manufacturer.
Paso 3: Send Drawings and Expect Engineering Feedback
A custom order starts with your inputs: the floor plan or CAD drawing, the glass thickness preference, and the hardware finish requirements. What you should expect back is engineering dialogue. A capable manufacturer reviews your drawings for anything hard, costly, or risky to build and suggests changes before tooling starts, a review usually called DFM, design for manufacturing.
KJ Bath’s project process takes this further for engineering buyers: the R&D team runs a structural pre-check on submitted drawings, covering waterproofing dead corners and installation feasibility, and returns optimization suggestions within 24 horas. That turnaround matters because every problem caught on paper costs an email, while the same problem caught during installation costs a crew standing in a finished bathroom. If a supplier responds to drawings with a price and no questions, they are pricing your assumptions instead of your design.
Paso 4: Quote, Muestra, and Approve Before Mass Production
With the engineering settled, the sequence is quote, muestra, approval, producción. KJ Bath quotes samples at about 15 working days including special-size glass processing, and sample policy is flexible for qualified partners, with freight typically on the buyer’s side. The minimum order quantity on main models, from the JL712 screen to the JL139 diamond and JK1934 corner units, is 10 conjuntos, which keeps the first production order a market test rather than a warehouse bet.
Inspect the sample the way your end user will. Check the glass edge polish and the tempering mark, run the door through its full travel and feel the rollers, close it against the magnetic seal and look for light gaps, and wipe the hardware finish against your approved swatch. Your sample was produced on the same line and by the same crew that will run your mass production, so the approval you sign is an approval of the process, not just one unit.
Paso 5: Lock the QC Tests into the Order
Quality claims mean nothing until they name a test. The five checks that matter for shower enclosures are all machine-based, and all five run on KJ Bath’s production batches. Write them into the purchase order with the deliverable you expect for each.
| QC test | What it proves | What to ask for |
|---|---|---|
| Tempering verification | Panels are fully tempered and dimensionally true | Batch tempering records in the QC report |
| Impact test | The enclosure structure withstands impact without failure | Impact machine results for the project model |
| Packaging drop test | Glass survives last-mile handling, decisive for e-commerce | Drop test video and report |
| Salt spray test | Hardware resists corrosion through humid, chemically cleaned service | Salt spray hours from the corrosion chamber |
| Push-pull cycle test | Rollers stay smooth under years of daily use; KJ Bath rates 100,000 ciclos | Cycle count from the roller test rig |
Traceability is part of the test story. A factory that stores its tempered panels in labeled batch racks can trace any panel back to its production lot, which is exactly what you want behind a warranty claim two years later. The custom glass options themselves, from thickness to low-iron clarity, are compared in our guide to custom shower glass panels.
Paso 6: Require Paperwork That Travels With the Goods
The shipment should arrive as a complete file, not a product plus an IOU. KJ Bath’s standard delivery pack includes the quality inspection report with tempering, impacto, salt spray, and cycle data; SGCC and CE certificate copies, so customs clearance and project site inspection never wait on an email from China; a detailed installation manual for the specific project models; and a spare parts pack with the wearable components, spare rollers and seal strips. Certificates that live in a salesperson’s camera roll protect nobody. Ask where each document will be when the container opens.
Compliance planning belongs in this step too. North American projects should confirm SGCC listing on the glass early, because the listing is built on ANSI Z97.1 and both names appear together on inspection paperwork; our comparison of SGCC, CE, y ANSI Z97.1 maps which certificate covers which market.
Paso 7: embalaje, Drop Testing, and Freight
Glass travels badly by default, which is why packaging is engineered rather than improvised. Standard export packing for shower enclosures pairs honeycomb cardboard boxes with reinforced wooden crates and strapping, and KJ Bath backs the packaging with a formal drop test, including video and report on request, a decisive document if your channel is e-commerce and your returns are measured in shattered panels.
Plan the freight leg with lead time in mind. KJ Bath quotes 30 working days for a first mass-production run including material scheduling, y 20-25 days on repeat orders once molds and material plans exist, which is the quiet discount of a second order. From Foshan, container shipping to North American and European ports is a routine lane; the variable to manage is your receiving dock, not the ocean.
Paso 8: Payment Structure and the Production Timeline
Payment terms are your risk control. The standard structure is a 30% deposit with the 70% balance due before shipment after inspection has passed, which keeps a professional incentive aligned at every stage: the factory has capital to schedule materials, and you hold the meaningful balance until the goods are verified. Full prepayment removes your only lever and should be treated accordingly.
Behind the lead-time promise sits a ten-step production flow, and knowing it tells you where your order actually is on any given week: aluminum material preparation, automatic cutting, automatic slotting, semi-product assembly, glass preparation, glass inspection, finished product inspection, embalaje, warehouse storage, and container loading. Material preparation is where the 30-day first-run lead time earns its length; on repeat orders the material schedule already exists, which is where the 20-25 day figure comes from.
| Stage | Typical duration | What you receive |
|---|---|---|
| Inquiry and engineering review | Días; structural feedback within 24 hours on project drawings | Optimized drawings and a costed quote |
| Sample production | About 15 dias laborables | Sample unit for approval |
| First mass production | About 30 dias laborables | informe de control de calidad, certificados, packed order ready for loading |
| Repeat orders | About 20-25 dias laborables | Same line, shorter material scheduling |
Paso 9: Set Up After-Sales Before the Shipment Lands
The last step happens before the container sails. Confirm the warranty in writing: KJ Bath carries 5 years on shower doors and 3 años en hardware, and international inquiries are answered within 12 horas, with lifetime online technical support on sold products. Confirm the spare parts reorder path for the models you bought, and put the supplier’s installation manual into the hands of whoever will run installation, because the claims that get denied are the ones that look like installation errors. A half hour of after-sales setup before the shipment leaves costs nothing and removes the two most common post-delivery disputes.
Why Buyers Source Custom Shower Enclosures in Foshan
Foshan built the deepest shower enclosure supply chain in China, and the manufacturers at its center run glass processing, aluminum machining, asamblea, and automated packaging within one set of walls. Baño KJ has manufactured there since 1999, exports across North America, Europa, Australia, and Southeast Asia, and holds ISO 9001, ISO 14001, and ISO 45001 alongside SGCC and CE certification. Para importadores, that translates into a single accountable partner from drawing review to container loading, with the full process documented on our proceso de fabricación page. To start a custom program, review the requirements on our custom shower door manufacturer page or browse the shower enclosure and door range.
Ready to Source Custom Shower Enclosures?
KJ Bath supports first-time and experienced importers with drawing review, 15-day samples, a 10-set MOQ on main models, and test reports plus certificates shipped with every order. Send your floor plans or a reference photo and we will come back with a quote and the questions a manufacturer should ask.
Preguntas frecuentes
What information do I need before requesting a quote for custom shower enclosures?
Bring four things: the door configuration, glass thickness in the 6-12mm commercial range, the hardware finish, and dimensions taken from current floor plans. KJ Bath’s project process also accepts CAD drawings and returns structural optimization feedback within 24 horas, which turns the quote into an engineering conversation instead of a guess.
How long does it take to produce a custom shower enclosure order?
KJ Bath quotes about 15 working days for samples, including special-size glass processing, y 30 working days for a first mass-production run. Repeat orders typically shorten to 20-25 days once molds and material schedules are already in place.
What is a normal MOQ when importing shower enclosures from China?
KJ Bath sets a 10-set MOQ on its main models, including the JL712 screen, the JL139 diamond corner unit, and the JK1934 sector model. That is low enough for an importer to test a market without committing to a full container of inventory.
Which quality tests should I require in the purchase order?
Five: tempering verification, impact testing, packaging drop testing, salt spray testing for hardware corrosion, and a push-pull cycle test on the rollers, which KJ Bath rates at 100,000 ciclos. Ask for the reports, and for a drop test video if your channel is e-commerce.
What documents should ship with the goods?
A quality inspection report with tempering, impacto, salt spray, and cycle data; SGCC and CE certificate copies; a model-specific installation manual; and a spare parts pack with spare rollers and seal strips. KJ Bath includes this pack as standard so customs clearance, site inspection, and first-line maintenance never wait on a follow-up shipment.
