Qingdao Kindrate Machinery Technology Co., Ltd: We are mainly engaged in the R&D, designing, manufacturing and sales of high-pressure alloy pipelines, pipe fittings, flanges. in the fields of coal mines, petrochemicals, construction, waterway dredging, and marine engineering. As a supplier of high-pressure, UHV, and large-diameter high-end pipe fittings at home and abroad, our company has an international standard production workshop, advanced production equipment and a national testing center.