Uses: For delivery of sintered ore, coke, cement clinker and other high-temperature materials. High adhesion strength with a layer of concave conveyor belt characteristics: high temperature resistance, aging resistance, acid and alkali, good weather resistance, can be used in a sunny, humid environment for a long time, not cracking early aging, the process of using does not appear blistering, delamination phenomenon. Concave conveyor belt T3 use temperature ≤ 150 ° C; and T4 use temperatures ≤ 180 ° C. Concave conveyor belt perform standard: HG/T2297 (T3-type), HG/T2297 (of T4 type) standard for transporting small particle size of the material equipment of food crops, chemical products, such as peanuts, corn, rice, wheat, soybeans, and other ancillary products, which is characterized in the transportation process, at different times, in different parts of throughput relative to the average. Can be used to require a higher food production, processing, storage, and chemical fertilizer, chemical, medical goods transported.