After-sales repair
To build a century-old brand and the most reliable sewing brand in the world
1. SF9811 Promotional Video
SF988-373D Automatic Button-Attaching Machine
SF9813S Fully Automatic Gasket-Adding and Button-Attaching Machine
SF9815 Direct-Drive Fully Automatic Button-Attaching Machine
SF9918
Performance Overview of the Yonggong 9915
Method for Adjusting Stitch Length
Adjustment Method for the Amount of Bobbin Oil
Adjustment methods for skipped stitches and broken threads
Method for Adjusting the Winding Quantity of a Winder
Adjustment method for skipped stitches and broken threads
Solutions for Unstable and Incomplete Wire Cutting
Official Website
Subscription Account
Video Account
TikTok account