Established in 1980, Yanhan Trading Co., Ltd. specializes in the sales of sewing thread winding machinery. In 1992, adhering to the four principles of technological innovation, high-efficiency production, strict quality control, and low maintenance costs, the company developed and launched a series of fully automatic and semi-automatic high-speed sewing thread winding machines. These machines are marketed under the Thread Master brand and have gained popularity and widespread use in the domestic and international sewing thread production industries, earning high praise and recognition in the industry. Main Products Automatic Sewing Thread Winder Automatic high Speed Sool Winder Automatic Winding Machines Automatic Mini Thread Winders Automatic Wefting Bobbin Winder H-Shaped Bobbin Winder Semi-Auto Sewing Thread Winder Semi-Auto Cross Cone Winder Precisions Cross Cone Winder