一级特黄牲交大片免费视频,久久精品午夜福利电影院,青娱乐在线视频网站,久操免费在线观看,久久精品一区二区三区免费,国产日韩一区二区三免费高清,旧里番3d馆强制榨精,国产成人精品久久久久网址

Brief introduction for JSST

The predecessor of Shanghai Junshan Surface technology construction Co.,Ltd( hereinafter referred to as JSST) is Shanghai Junshan surface technology Co,Ltd, founded on April 27th of 2001.

See more

Intellectual property

  • Safety production standardization 2020.05.21
  • Certification of environment management system 2019.02.19
  • Certification of quality management system 2019.02.18
  • Automatic brush plating machine 2018.09.04
  • Sand blasting unit 2018.09.04
  • Assisting sorting system for surface defect 2018.09.04
  • Cylindrical surface grinding device 2018.07.10

See more