... 4.Good service I .Introduction of the manufacture of Hot Water High Pressure Hose Zhejiang Danau Industries Co., Ltd was ... quick couplers , seals, o-rings , pumps that have been run without water supplied or no oil filled damage or malfunction resulting from ... the manufacture control .IV. Domestic and International Exhibition of Hot Water High Pressure Hose Every year , Zhejiang DANAU Industries Co., ...