... quality inspection 2.Size: Based on drawing 3.ISO9001-2008 Lock,Door Lock,Handle Lock,We are a professional manufacturer specialized in locks, handles, hinges ... , Aluminum, Steel,Plastic,etc.Generally, our products are made of zinc alloy, Al alloy, brass, other steel, also, we do the surface treatment ... plated, satin chrome plated, brass brushed, bright brass, polished etc. Lock,Door Lock,Handle Lock