... .grade:4.8/8/105.surface:balck phosphate, plain ,zinc Cr+3,,yellow zinc plated , H.D.G ,6.packing: bulk , ... or other special materials. For finishing, we provide black oxide, zinc electroplating, phosphate, copper plating, mechanical galvanization, hot dip galvanization, ... hesitate to contact us. If you want to get more information about our company, you are welcomed to visit us. Zinc Plated din934 ...