Customized 850 degree high-temperature heating tube for 3D curved screen forming machine heating tube of hot bending machine. As a key component of hot bending machine, the use of electric heating plate and high-temperature heating tube is a great problem for many hot bending machine manufacturers and users. At present, Kunshan Tenaijia Hardware and Electrical Appliance Co., Ltd. has cooperated with well-known domestic composite material enterprises to successfully develop high-temperature heating tubes and silicon carbide ceramic heating plates suitable for 3D glass hot bending machines. The products are used in high temperature environments of 800 degrees and 850 degrees, with good electrical performance and a product life of over 6000 hours.