Wuhan polytechnic development co. Ltd. Is a strong pigmentator, which mainly produces mid-chromium yellow, lemon yellow, light yellow, dark yellow, orange orange, molybdenum chromium red, molybdenum chromium oranges for many years, iron and yellow iron, iron and black, iron and green, iron and iron palm, iron and orange, etc., as well as composite rust-proof paint, red titanium powder, instead of red powder; gray titanium powder, instead of partial zinc powder, white titanium powder, instead of partial phosphate and tripolyphorate aluminium。