Craft Iron Fencing(14 years factory) Surface treatment processes of fence produced by HONGSHENG are as follows work-piece in fine processing -- hot galvanizing (played as electric protective react, prevent the steel parts from rusting from inside to outside) -- surface refinishing -- skimming-cleaning -- surface adjusting --Zinc Phosphating (increase adhesion of the coating and the work-piece) -- Cleaning -- curing -- drying -- surface spray -- Vulcanization & Curing -- latter period processing. Welcom to contact Tel:86-318-7688868 Fax:86-318-7522627 Ms Sindy Li.