Jiangsu Jinshi Machinery developed high-pressure open rod expansion valve was expertly appraised
Others Concrete Vibrator,Handy Concrete Vibrator,Internal Concrete Vibrator,Concrete Vibration Machine NINGBO MAX MACHINERY CO.,LTD , https://www.nbmaxmachinery.com
The product has passed the inspection of the National Petroleum Industry Quality Supervision and Inspection Center, and all performance indicators have reached the API6A standard requirements; the product implements the ISO9001 quality system standard; the American Petroleum Institute has passed the certification and obtained the API6A certificate.