Always keep Grade A + quality, being a reliable supplier
1) Raw materials: For each batch of materials, professional QC staff will check carefully to insure only standard one can get to production line.
2) Production.Strictly follow workflow guideline to insure no mistaken on any step.
3) Testing: 100% testing on each finished toner cartridge, only grade A+ quality ones can pass and come to packing step.
4) Tracing record: We make record for each shipment; If any complaints, can easily trace back, like materials.