... of particle grading function design and screening hoist inflammable and explosive material hoist.Technical parametersHoist conveying ... Group, Science and Technology of Beijing Antai, Chongqing Yamaha, White Dove(Group)Co.LTD, COFCO, CAEC, SINOPEC YANGZI PETROCHEMICAL CO.,LTD, Peking ... Arabia, Romania, Chile, Kazakhstan, Sweden, Angola and some other countries, we also get their favorable comments ...