- Shanghai Dobetter Instrument&Equipment Co.,Ltd
- flash point tester, kinematic viscosity, sulfur analyzer, CCS, HTHS, ductility machine, viscometer.
- Address:No.600 Meiyu Road Shanghai, Shanghai
- River Instruments Co.,Ltd
- hardness tester, carbon sulfur analyzer, ultrasonic fault detector, CO2 Incubator.
- Address:o58,xinjia Road,Songjiang Shanghai, Shanghai
- NPO SPECTRON
- ectrometer,X-ray fluorescent EDXRF analyzer,determination of sulfur weight content in petroleum,ectrometer, .
- Address: