Shangsheng Acrylic Products Co., Ltd. in Dongguan has recently updated the full-process quality inspection standards, covering acrylic cutting, polishing, bonding, heat bending, UV printing, and packaging across all processing stages. Dedicated inspectors are assigned to each step, changing the previous model of only inspecting finished products at the end. This reduces the outflow of defective products from the source. The most common after-sales issues with acrylic products are edge scratches, bonding bubbles, print fading, and dimensional deviations. Many customers purchase display racks for in-store displays, and even minor flaws can affect the overall display effect. Returns and exchanges involve back-and-forth transportation, delaying the merchant's use. Therefore, the company has reviewed various customer feedback over the past two years, refining inspection points for each process to form a standardized inspection checklist.
The first step for raw material entry is for quality inspectors to verify the thickness, transparency, and surface for any factory scratches of acrylic sheets. Sheets with obvious defects such as cracks, yellowing, or scratches are directly returned to the supplier and not processed. In the cutting stage, the dimensions are strictly checked against the drawings, with length and width errors controlled within 0.2mm. Sheets with chipped or burr edges are uniformly selected for re-polishing. The heat bending process inspects the smoothness of the arc to avoid uneven surfaces that cannot be joined after forming. The bonding station focuses on checking the bonding gaps to eliminate bubbles and white oozing glue. UV print finished products are tested for ink adhesion; only those that do not fade with simple wiping are considered合格.
All finished products after processing are centralized in the finished product inspection area. Staff verify the appearance, patterns, and hole positions against customer drawings. Transparent acrylic products are checked under strong light for internal dust and scratches, while colored sheets are examined for color uniformity. Qualified products are labeled with a pass mark. Those with minor flaws but still usable are classified separately, and customers are proactively contacted for discounted processing. Severely flawed products are directly scrapped and never mixed with qualified orders for shipment.
The company has also improved its production ledger, recording processing personnel, quality inspectors, and sheet batches for each order. If a customer reports issues with the product, the corresponding process can be quickly traced, allowing targeted adjustments to the processing method. The workshop holds weekly review meetings with quality inspectors and operators to summarize flaws encountered during the week, analyze their causes, and optimize operational techniques. For example, to address frequent bonding bubbles, the company adjusted the speed of glue application and the static time for bonding fixation. For print color differences, standardized color adjustment parameters were set for different batches of sheets.
The upgraded quality inspection system has not compressed shipping efficiency. The workshop has implemented staggered inspection times and added two dedicated quality inspectors, ensuring that inspection and processing proceed simultaneously without extending the delivery period.
Since the implementation of the new standards, customer feedback on returns and exchanges has decreased by more than half. Many long-term cooperative supermarket and cultural and creative clients have stated that the product craftsmanship is stable, saving time that would otherwise be spent on frequent after-sales communication. The company's leader mentioned that the acrylic processing industry has intense competition, and simply lowering prices is not sustainable. Stable quality and comprehensive quality control processes are the core advantages that the factory uses to retain customers. Moving forward, the company will also continue to customize new product categories based on customer needs, update corresponding quality inspection items, and continuously reduce the defect rate of finished products.
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