Happy (Tianjin) Technology and Development Co., Ltd. is based on integrity of Research & Development, Manufacturing & Sales. Our main products include hydraulic hose, drilling hose, concrete hose, oil suction hose, water suction hose, fuel hose, oil delivery hose, water delivery hose, steam hose, sandblast hose, chemical hose, air hose, welding hose, flex metal hose and so on.