Utility Model Patent Certificate for a Fine-Needle Two-Color Bird's-Eye Knitted Fabric
Utility Model Patent Certificate for a Cotton-like Fine-Needle Stretch Twill Knitted Fabric
Utility Model Patent Certificate for a Large Circular Knitting Machine Yarn Feeding System
Utility Model Patent Certificate for a Large Circular Knitting Machine Tension and Winding Mechanism
Utility Model Patent Certificate for a Large Circular Knitting Machine Door Switch