Zhonglong hydraulic is founded by the backbone of Shanghai Gaohang hydraulic industry in the 1970s, with decades of rich experience in the production and processing of oil filters and hydraulic valves. Zhonglong hydraulic brand under the existing Shanghai Zhonglong hydraulic machinery Co.,LTD., Nantong Zhonglong hydraulic Co., LTD., Shanghai Zhonglong mechanical and electrical equipment Co.,LTD.Zhonglong hydraulic covers an area of tens of thousands of square meters, plant all its own, and set u