Inventions

Insulation system of seal pouring machine in 2018Image
Insulation system of seal pouring machine in 2018Image
A pouring transfer system for sealsImage
A mixed pouring backflow control system for sealsImage
Seal element Patent Registered in 2001Image
Pipe test seal ring in 2011Image
Sealing element with clearance certificate in 2002Image
Lip seal ring for large shield machine 2013Image
Hydraulic press seal ring utility model Patent certificate in 2018Image
Hydraulic press seal element Utility Model Patent certificate in 2018Image
Rail-defect detector car –water film certificate in 2018Image
Seal ring for shield machine in 2018Image