... per customers drawings and specifications, offering OEM service Brass Valve1. Product Introduction(1) Brass Valve(2) OEM Orders Based on Drawings or ... etc.(4) Main inspection devices: digital projector, Rockwell hardness tester, hydraulic valve test bench, micrometer, thread ring gauge and plug gauge and ... : Xishanqian village, Huanxiu street, Jimo, Qingdao, Shandong province, China Brass Valve