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