... is 3.1m, and our engineer also can design the products and supply the best solution as per the clients special ... , urban water supply.Company Profile:Tianjin Aokai oil TOOLS CO.,LTD. located in HOGNQI ROAD,DAGANG OILFIELD,TIANJIN,CHINA, which is collection of ... customers as the center, focuses on CSI of after-sales products and service, and constantly deepens the cooperative relations with customers ...