... on the production of hydraulic power unit. We focus on the production of hydraulic power unit .About UsChangzhou Tent Hydraulic Machinery Co., Ltd. ... it takes about 2 hours by bus, it takes about 1 hour by train.There are three factories ... steel tube, honed tube,chrome plated bar,hydraulic cylinder, hydraulic machinery such as honing machinehydraulic cold drawn ... us . WELCOME TO TENT hydraulic power unit