Endless conveyor belt (ring belt) after the completion of the flat conveyor belt production, because the environment or conditions, you must use a circular conveyor belt, on a flat conveyor belt curing joint (also known as hot-tack), make it into a circular conveyor belt (ring belt). Joints with a core strength can be a strong 90% of the tape body, the tape surface no obvious defects of joints, circular conveyor belt transport balance, the use of small elongation. The circular conveyor belt (ring belt) with a core with high-quality cotton or dimension cotton interwoven made of canvas, usually 2-8 layers with nylon canvas (or polyester canvas) for the strong layer. The Company may need to produce according to customer the proper length, width and thickness of the ordinary type, heat-resistant (≤ 180 ° C), cold type (not less than -40 ° C), acid and alkali type, high temperature type (not more than 200 ° C) and circular conveyor belt. 
 The annular sidewall conveyor belt means the production process has conveyor belt made of a circular conveyor belt joints, joints with core strength can be achieved by a strong 90% of the tape body, the tape surface no obvious defects of joints, so the tape transport balance the use of small elongation. The annular sidewall conveyor belt with a core made of canvas using quality cotton or dimension cotton interwoven, usually 2-6 layers or NN-200 nylon canvas (or polyester canvas) for the strong layer.