Beijing Yizhuang Development Zone No.9 Xin Xing Construction Materials No.11 Xin Xing Building Materials No.17 Functional Materials No.19 Flue Gas Treatment No.19 Environmental Protection Services No.22 Electronics Functional Materials No.26 Da Qi Zhi Management No.31 Desulfurization and Denitrification No.35 Coatings No.37 Wu Hai Chemical Processing No.40 Solid Waste Treatment No.44 Zi Yuan Zai Sheng 专精特新小巨人企业 企业技术中心 知识产权示范企业 市级知识产权示范企业 中关村高新技术企业 高新技术企业