1,Material: Zinc alloy 2,Finish:SC/SN/CP/AB/AC/BP/BSN/ ... ODM is available 4, fast delivery time Zinc alloy security door chain1,Material: Zinc alloy 2,Finish:SC/SN/CP/AB/AC ... , fast delivery timeWe are factory,specialize in hardware products for door hardware, funiture hardware and other hardware fitting. OEM and ODM are available. Our ...