... based on drawings or samples from customers(3) Material: brass,copper(4) Chrome, nickel plating or as per customers ... fasteners: bolts, nuts, washers; CNC machining precision parts: valve accessory, brass tube fittings, elbow, tee, nut; Auto-lathe turning precision part ... , hydraulic valve test bench, micrometer, thread ring gauge and plug gauge and other regular gauges.(5)Certificate: SGS ISO 9001 ...