There are various CNG pressure gauge, 12V,5V,10V CNG pressure gaugeSENJE Group.Chengdu Laida Mechanisam and Electronics company, is Located in Chengdu City, Sichuan Province,China. Now it is one of largest CNG installation companies in China, which consists of Sichuan Senrui Technology Co.Ltd,Chengdu Laida Mechanical&Electronic Co.Ltd,Sichuan Tongxin Fuel Gas Equipment Co.Ltd,Chendu ...