1,Material: Zinc alloy 2,Finish:SC/SN/CP/AB/AC/BP/BSN/PC/PN/PVD/etc. 3,OEM and ODM is available 4, fast delivery time Zinc alloy security door chain1,Material: Zinc alloy 2,Finish:SC/SN/CP/AB/AC/BP/BSN/PC/PN/PVD/etc.3,OEM and ODM is available4, fast delivery timeWe are factory,specialize in hardware products for door hardware, funiture hardware and other hardware fitting. OEM and ODM are ...