1. CNG pressure gauge and switch kit 2. ISO9001:2008 3. Economical 4 ... manufacturer 50 MM CNG PRESSURE GAUGE,SS BODY, INTERNAL AND WETTED PARTS OF SS, ALUMINIUM DIAL 1/8' ... switches.Our company have got the ISO9001:2008 certificate,and is ready to got ECER110,ECER10,certificate in the ... the requirements of National Bus Quality Supervision and Inspection Center, with certificate number of QE08WT1K05841.