Name reference of environmental protection technology companies: Roland, Bohui, Dinghua, Beiliang, Wantong, Hanjin, Hengxuan, Maxi, Shibao, Jian Shuo, Yin Ke, Haodian, Vanke, Shunlan, Henglin, Zhuo Wei, Haoyuan, Bluestar, Yuteng, Hangyi, Linju, Bazhan, Shengxin and Yuansai. Jiao Hong, Shida, Yuanfa, Dongxiang, Ordovician, Maifei, Sidi, Elite, Aohao, Saiwei, Fengyang, Wangte, Yue Hui, Guanji, Zhongfeng, Zhan Qing, Jianjia, Cai Wei, yuechi county, Baiyi, Huang Shun, Sheng Chao, Haihong, Xiangke, Shicai and Youyou.