No.221 Yuhang District Popularity Ranking Hangzhou Zhejiang No.5 Boilers No.6 Boilers Technology No.6 Boilers Equipment No.7 Ya Li Rong Devices No.10 Equipment Design No.17 Special Equipment No.29 Petrochemicals No.46 Guo Chan Chemical No.96 Equipment Kong Fen Equipment Di Wen Rong Devices Zhu Trough 省级高新技术企业 高新技术企业 专精特新小巨人企业 创新型企业 ISO9000认证 ISO14000认证 ASME认证