... .4, Mass production after you approve the sample.5, Delivery of goodsTerms of delivery:1, Ex-work for sample2, FOB Shanghai port ... for production or negotiable.Terms of payment:1, Full payment be paid before making.Production: 30 ... ,cold rolled steel with various plated;3)Surface treatment:kinds of plating(Zinc,Chrome,Tin,Ag);Powder,Anodizing,Heat treatment,Black oxid4 ...