... CastingSandGreen Sand, Sodium Silicate SandMachineLathe,, Drilling Machine, Milling Machine, Boring Machine, Planing MachineSurface atmentPainting, Spraying, Galvanization We ... send us the drawings with detailed information as material, dimension, net/gross weight, quantity etc, ... primer painting, and surface treatment.(3) Full material testing process.(4) Quality control Our Advantage(1) We ...