... 12 years industry experience Product No./NameJJ-00018 / High temperature teflon coating baking tray of aluminum die castingManufacture Process1 ... drilling, polishing, punching, etc... 6) 3 advanced high & low temperature coating lines.7) Excellent equipment, Caring term service, ... Tolerance: +/- 0.0005inch, also accord with GB6414 High temperature teflon coating baking tray of aluminum die casting