Bulk orders for custom solid surface basins should not start from a unit price alone. The buyer needs a confirmed drawing, sample approval record, finish note, packing method, inspection plan, and a clear understanding of what will happen if the next order repeats the same specification.
Confirm the drawing version
Every custom order should be tied to a drawing version. The drawing should show outside size, bowl size, drain center, faucet hole, overflow, edge detail, installation method, and any special notes. If the drawing changes after quotation, request an updated quotation or written confirmation.
For custom dimensions, use Custom Sizes service and share the application. A basin for a vanity cabinet, hotel room, apartment bathroom, or commercial counter may need different tolerances and installation notes.
Approve the sample with measurements
Sample approval should include photos and measurements, not only a short message saying "approved". Measure the outside size, bowl depth, drain position, faucet hole, edge width, and any visible detail that matters to the project. Keep the sample record with the purchase order.
If the sample does not match the drawing, decide whether the drawing changes or the sample must be revised. Do not leave the difference unexplained, because bulk production will follow one of those references.
Write the material statement clearly
Solid Surface is the standard material for QINGDA catalog basins. If the buyer requests Corian for selected custom projects, that requirement should be written clearly and reviewed through the Corian Material Option. Do not use Corian as a default label for every basin.
Material wording should be consistent across quotation, sample approval, product sheet, carton note if needed, and project documents. This prevents confusion when purchasing, sales, and installation teams share the same file.
Set MOQ, lead time, and revision rules
Custom orders may involve mold cost, sample cost, MOQ, color requirements, finish limitations, and longer lead time. Ask which details can still be revised after sample approval and which changes would require a new sample or mold review.
The buyer should also decide whether the first order is a trial, a project shipment, or the start of a repeat program. The supplier will usually give better planning advice when the quantity and expected reorder pattern are realistic.
Check packing before production finishes
Packing is part of the product. Confirm carton size, foam protection, corner protection, pallet option, label format, and whether installation notes or product codes need to be included. A good basin can still create problems if the cartons are hard to identify or poorly protected.
For large or mixed orders, use Project Supply support to discuss shipment batches, carton marks, and loading photos. This is especially useful when one purchase order includes several sizes or finishes.
Keep records for the second order
The second order is easier when the first order is documented. Keep the approved drawing, sample photos, inspection notes, carton photos, order quantity, shipping term, and any feedback from installation. If a problem appears on site, record it while the details are still fresh.
Before placing a bulk custom order, contact QINGDA with drawings, sample status, quantity, packing needs, delivery plan, and any material option requirements.
Separate trial orders from project orders
A trial order is usually meant to test market response, installation feedback, or distributor interest. A project order has fixed installation dates, approved drawings, and a stronger need for consistency. Treating both the same way can create either unnecessary cost or too much risk.
If the first order is a trial, keep the model range narrow and collect feedback carefully. If it is a project order, spend more time on sample approval, carton marks, inspection photos, and delivery coordination before production starts.
Decide who signs off each detail
Custom basin orders often involve purchasing, design, engineering, sales, and installation teams. If everyone comments but nobody owns final approval, the supplier may receive conflicting instructions. Assign one person or one project file as the final authority.
The approval file should show the latest drawing, sample photos, finish note, packing requirement, and quotation. When a detail changes, update the file and send the supplier one clean confirmation instead of several partial messages.
Preparing a bulk order for custom solid surface basins? Contact QINGDA with drawings, sample notes, quantity, finish, packing, and delivery requirements.