25+ Patents

Technology & Patents

Innovation is at the core of Shichang. With more than 25 patents, we continuously advance screw technology to provide energy-saving, reliable, and customized solutions for industrial applications.

Pioneering oil-free screw technology since 2016

Innovation Patents

Our Patent Portfolio

Advanced screw technology and innovative engineering solutions protected by comprehensive patent coverage worldwide.

ISO Certificate
ISO Certificate
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Oil-Free Screw Blower Patent
Oil-Free Screw Blower Patent Signed
Bearing Cooling Structure Patent
Bearing Cooling Structure Patent Signed
Variable Cross Section Vacuum Pump Patent
Variable Cross Section Vacuum Pump Patent Signed
Roots Screw Pump Unit Control Method
Roots Screw Pump Unit Control Method Patent
Screw Blower Bearing Lubrication Structure
Screw Blower Bearing Lubrication Structure Patent
Screw Rotor End Face Profile Structure
Screw Rotor End Face Profile Structure Patent
LPG Waste Gas Recovery Device
LPG Waste Gas Recovery Device Patent
Multi-Purpose Screw Compressor Unit Patent
Multi-Purpose Screw Compressor Unit
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