Many buyers encounter colour deviation, surface defects, shortened service life or swapped substrates when receiving PPGI, GI & GL coil shipments.

A good sample only proves a supplier *can make one good piece*. To avoid costly procurement risks:
✅ Verify sample traceability from real production batches
✅ Fix steel substrate, galvanizing and full coating parameters in your contract
✅ Carry out pre‑shipment inspection with MTC and production/loading photos

Quality control belongs in the factory, not after container unpacking.
Choose a reliable supplier, not just a competitive price.Partner with Haochuang Steel for reliable steel coil supplies.