Zhejiang Zhengmao Pneumatic Machinery CO.,LTD is a factory specialized in air impact wrench, high pressure washer and hydraulic jack.Since its inception in 2004, our firm has been insisting in adopting new technologies, fostering high-quality and high-skilled staff, Thanks to the honest credibility,excellent quality and continuously innovative style, the products are sold far to america,Europe and the middle east and welcomed by customers both at home and abroad.