Hoang Long Trading and Import-Export Co., Ltd is a company specializing in trading high quality materials and equipment according to BS, JIS, DIN and European standards. Import markets: G7, Korea, QUOC, Taiwan and China Business items: + Industrial valves: Steam valve, gate valve, safety valve, butterfly valve, ball valve, one-way valve, electric valve, pressure reducing valve, pneumatic valve, .. serving food, pharmaceutical, chemical industri