We request to Hong Seng Kee for coating test and Hong Seng Kee accept so we already test in 3 conditions First one is normal coat we found 2 type of defect ( circle shape and line shape ) in the picture
We request to Hong Seng Kee for coating test and Hong Seng Kee accept so we already test in 3 conditionsFirst one is normal coat we found 2 type of defect ( circle shape and line shape ) in the picture