Acrylic Quality Control · ISO 9001 Certified · Since 2008
Acrylic Quality Control, Stage by Stage
We inspect each finished product against the approved drawing and sample before packing.
Wetop Acrylic runs a 4-stage acrylic quality control process across custom acrylic (PMMA) products, from incoming material inspection through pre-shipment verification. The approved drawing defines measurable requirements, and the approved sample defines the agreed finish and fit.
Send a sketch, drawing, or sample target — we'll map it through the 4 stages above and reply within 24 hours.
4-Stage Acrylic Quality Control Process
100 pieces per design, paid samples in 3–5 days, production in 15–20 days, named 3mm case material, and a ±0.2mm standard working tolerance frame Wetop's acrylic quality control for the planning example below; the approved drawing can set different acceptance limits.
| Named specification | Quantity | Published planning point |
|---|---|---|
| 150 × 100 × 100mm magnetic-lid case, 3mm clear acrylic | 500 pieces | $6 per unit FOB Shenzhen |
This published low-end point belongs to the named case specification. It is not a quality-control fee or a quote for another product.
Incoming Material Inspection
Before production startsWhat we check
- Sheet clarity — no inclusions, bubbles, or haze
- Thickness checked against the ordered sheet grade, supplier data, and approved drawing
- Surface checked for scratches, scuffs, or protective film defects
- Color consistency across sheets (batch matching for colored acrylic)
If it fails
Material that misses the approved requirement is quarantined before cutting. The reviewed disposition can be supplier replacement, approved reclassification, or rejection; production does not use it under the original specification.
In-Process Inspection
During cutting, forming, and finishingWhat we check
- Cut dimensions verified against the approved drawing (±0.2mm standard working tolerance unless the drawing states otherwise)
- Edge quality after polishing — checking for chips, unevenness, or haze
- Bend angles measured with precision gauges
- Print alignment checked against positioning guide before full run
If it fails
A nonconforming piece is held before the next station. The reviewed disposition records whether production can correct it or must recut or remake it against the approved drawing.
Final Product Inspection
After assembly, before packingWhat we check
- Side-by-side comparison with approved sample — every piece, not spot checks
- Surface inspection under direct light for scratches, fingerprints, or bonding residue
- Assembly integrity — joint appearance and hardware fit checked against the approved sample
- Print and engraving verified for alignment, color accuracy, and adhesion
If it fails
A piece that misses the approved drawing or sample is held for a documented correction, recut, or remake before packing.
This is the same inspection standard applied to every product we ship — from display stands to trading card cases to custom boxes.
Pre-Shipment Inspection
Packed order, before leaving the factoryWhat we check
- Random pull from packed cartons — verify product quality survived packing
- Packaging integrity — protective film, foam inserts, corner protectors in place
- Quantity count confirmed against purchase order
- Shipping labels, documentation, and customs paperwork verified
If it fails
A packing or product finding holds the affected shipment while the QC team reviews the lot and sets the required reinspection scope before release.
Certifications & What They Mean
Certifications only matter if you know what they actually cover. Here's what each one means for your order.
Quality system in place since 2008
ISO 9001 is an international quality-management-system standard. Wetop's certification applies to the legal entity, site, activity, and validity period shown on the current certificate. Buyers can request the certificate and verify that scope against the proposed order.
What it covers
The quality-management activities and certified scope named on the current ISO 9001 certificate; it is not a product-performance certificate.
Reports available for specified materials
SGS is an independent inspection and testing company. An SGS report applies to the material, test method, and scope named on that report; it does not certify every acrylic grade or finished product by default. State the required test at RFQ stage so we can confirm the applicable document.
What it covers
Only the composition, physical property, or compliance tests listed on the issued report for the named material.
Documents confirmed by ordered material
RoHS documentation is material- and scope-specific. If your market or retailer requires it, name the required directive, material grade, and document type in the RFQ; we then confirm the available supplier declaration or test report before production.
What it covers
The restricted substances, material, supplier, and test scope identified on the applicable declaration or report.
Material Documentation for Enterprise Onboarding
4 documents cover most supplier-onboarding and material-compliance requests for custom acrylic: the ISO 9001 certificate, the sheet supplier's TDS for the named grade, an SGS test report where one exists for that material, and the RoHS declaration or report for that material and scope.
ISO 9001 certificate
Wetop's own quality-system certificate
Legal entity, site, activity, and validity period shown on the current certificate. Sent as a PDF on request for supplier onboarding; verify the certified scope against the proposed order.
Material technical datasheet (TDS)
The sheet supplier, for the named grade
Wetop fabricates acrylic and sources every sheet externally, so the TDS and any composition statement belong to the supplier's named grade, thickness, and color. We forward the supplier document for the material we will actually cut for your order; it is not a Wetop-authored specification.
SGS test report
SGS, for the specified material
Applies only to the material, test method, and scope named on the issued report. State the test your market or retailer requires at RFQ stage so we can confirm whether a matching report exists for that material.
RoHS declaration or test report
Supplier declaration or independent report, per material
Material- and scope-specific. Name the directive, material grade, and document type required; we confirm the available declaration or report for that material before production, not after.
Wetop is a fabricator, not a sheet caster. A material composition statement or TDS is therefore the supplier's document for the grade we cut, forwarded for your order; we do not restate it as our own test data. Documents not listed here, such as a certification we do not hold, are not claimed, and we say so in the quote rather than after production. For acrylic blocks, displays, and every other product line the same four documents apply per named material.
Sample sign-off flow for documented orders
- 1
Documents confirmed against the RFQ
Grade, market, and document type are named in the request. We confirm which of the four documents above exist for that material before the sample is quoted.
- 2
Paid pre-production sample
Built in 3–5 days from the drawing and the named sheet. The sample fee is paid separately and is never credited to or deducted from production.
- 3
Written sample approval
Your sign-off names the sample as the acceptance reference for finish, print appearance, and fit; the approved drawing controls measurable dimensions. Any change reopens sampling.
- 4
Production and 100% inspection
Standard production runs 15–20 days after approval. Every finished piece is compared with the approved sample before packing, and QC photos are sent before shipment.
- 5
Landed inspection window
You have 7 days after delivery to inspect against the approved sample and drawing. Transit damage or a spec failure is reviewed with photo evidence and remade case by case.
The approved drawing controls measurable dimensions and features. The approved sample controls the agreed finish, print appearance, assembly fit, and handling feel.
What Happens If Something Goes Wrong
If a delivered product appears different from the approved drawing or sample, send the order evidence while the carton and packing are still available. We review the product, packing, and approval records before confirming a remedy for that order.
You report the issue
Email the order number and clear photos of the outer carton, inner packing, product label, and affected area to inquiry@wetopacrylic.com. Keep the product and packing available while we review the evidence.
We compare the evidence
Our QC team compares the photos and affected product with the approved drawing, sample, inspection record, and packing record. This review separates a manufacturing mismatch from packing damage, transit damage, or a specification difference.
We confirm the remedy in writing
If the review confirms a manufacturing mismatch, we document the affected quantity and agree the remedy, production timing, and shipping arrangement for that order. The approved drawing and sample remain the acceptance references for any correction or remake.
We document corrective action
We trace a confirmed production issue to the relevant process step and record the inspection or process change used for the correction. Learn how those checkpoints fit into the manufacturing process.
Frequently Asked Questions
How does acrylic quality control work on large orders?
100 pieces per design is the standard production MOQ, and the approved drawing and sample remain the acrylic quality control references as production scales. We inspect finished pieces against those references for dimensions, surface finish, print alignment, and assembly fit, with checkpoints between controlled production batches.
What does 100% inspection actually mean?
100% inspection means we check each finished product before packing. Our QC team compares the piece with the approved drawing and sample, measures the specified dimensions, inspects the surface and decoration, and checks assembly fit. A nonconforming piece returns to production for correction or remake.
What tolerance does acrylic quality control use?
±0.2 mm is Wetop's standard working fabrication tolerance unless the approved drawing states a different requirement. Part size, process, material thickness, hole position, bend angle, and mating hardware can require separate acceptance limits, so the signed drawing controls the order.
What happens if I receive a defective acrylic product?
3 photo sets help us review the issue: the outer carton, the inner packing, and the affected product from enough angles to show the mismatch. Email them with the order number to inquiry@wetopacrylic.com. We compare the evidence with the approved drawing, sample, inspection record, and packing record, then confirm the remedy and timing in writing for that order.
Can you provide material certifications and traceability for your acrylic?
3 details belong in the RFQ: the required material grade, the market or standard the document must address, and whether you need supplier or batch traceability. Available datasheets, declarations, and test reports apply only to the named material and scope. We confirm document availability against the requested specification before the order is approved.
Can enterprise buyers request a TDS or material composition statement for acrylic blocks?
Yes, for the named sheet grade. Wetop fabricates acrylic and does not cast sheet, so the technical datasheet (TDS) and composition statement come from the sheet supplier for the specific grade, thickness, and color ordered, and we forward them on request. Our own documents are the ISO 9001 certificate for the quality system, the SGS test report where one exists for that material, and the RoHS declaration or report covering that material and scope. Name the grade, the market, and the document type in the RFQ so we confirm availability before the sample is approved.
Have more questions? See our full FAQ.
Put acrylic quality control into your quote and sample plan.
Send the drawing, finish, quantity, packing, and inspection requirements for a written quote. A pre-production sample is paid separately from the 100-piece production MOQ, and its fee is never credited to or deducted from production.