Hai Land has developed high level portable hydraulic tester and hydraulic comprehensive test stand, , by depending on its own research and deriving international advanced technology of processing and manufacturing similar equipment. Portable Hydraulic Tester fills the gap in domestic hydraulic field and getting national patent. Hydraulic Test Bench sells abroad. Power Recovery Test Bench has reached word level and its power recovery can reach above 72%. For the production of hydraulic pump and motor, we produce the key components using imported material. Excellent producing technology, high product quality and fine after-sale service win praise of its wide customers.