Sight glass (colour changing type)
Float liquidometer(flange)
Sight glass(copper)
Sight glass(flange/thread type)
Tubular Gauge Valve
Juice liquidometer
Other accessories

      Changzhou Song Ying Machinery Factory was established in 1996, which is specialized in producing sight glass and oil level indicator. Our products have spread to over 60 domestic large-medium enterprises in more than twenty provinces, municipality and autonomous regions, we also export to many foreign countries, such as US, England, Germany, Italy, Japan, India, etc. We have already passed ISO9001,CE,RoHs certifications , high quality and first-class service get much good reputation from the world.
      Our main products are sintered sight glasses, moisture indicators, oil level gauges, flange type sight glasses and wiring boards which are well-assorted with different series of compressors, air conditions, air compressors and electric power equipment. Among them, oil level gauge is produced by cooperating with Belgium, it has novel appearance, simple structure, well airproof, high pressure, good character of anti-cold concussion, marked clearly and get good reputation in domestic and overseas market.
      Our company has scientific management, outstanding and specialized talented staff, moreover, we are equipped with special research and development organization, technical force is enough abundant...                                    more>>