Quality control in bag manufacturing starts with incoming material inspection. Fabrics, zippers, hardware and threads are checked against specifications before production begins.
During production, in-line inspection catches stitching, alignment and hardware issues early. Finished products then go through functional testing for zippers, straps and closures, followed by an outgoing inspection before shipment.
For buyers, a clear quality standard and a reliable inspection process reduce defects and returns. Ask your manufacturer about their inspection points and how they handle non-conforming goods.