we factory have padssed ISO9001 and ISO14001 system certificate Wespecialize in producing various rubber timing belt, doule sides tooth timing belt, auto timing belt, multi-wedge belt, Flat belt etc rubber drive belts and its auxiliary pulleys series products. and PU material belt For pulley types: including: 1> T-type tooth pulley: MXL, XXL, XL, L, H, XH, XXH, T2. 5, T5, T10, T20, AT5, AT10, AT20 2> Arc-type tooth pulley HTD---3M, 5M, 8M, 14M, 20M STPS/STS---S3M, S4. 5M, S5M, S8M, S14M RPP/HPPD---P2M, P3M, P5M, P8M, P14M GT---1. 5GT, 2GT, 3GT, 5GT, 8YU 3> pulley for Multi-wedge belt/Ribbed-belt PH, PJ, PK, PL, PM 4> ---also, we can do special according to your drawing and requirement. belt and pulley of our company can be attached or replaced by imported belt and pulley. thge material of pulley are mainly of carbon steel, also aluminum alloy, nylon ,iron can be used. Should any of these items be of interest to you, please let me know! we will be happy to give you details!