On June 9th, the group standard preliminary draft seminar on "Clean Production Evaluation Index System for Hydrazine Hydrate and ADC Foaming Agent Industry" was organized by CCAIA in Tianjin. Relevant responsible heads from Ningxia Risheng, Yibin Tianyuan, Jiangxi Shilong, Shandong Zhongyin, Fujian Rongchang, Huojia Industry and Weifang Yaxing among other compilation units attended the meeting. With Zhang Xin, Vice President of CCAIA, presiding over the meeting, the Association introduced the changes in the first level indicators in the clean production evaluation index system and the changes in clean production represented by benchmark values at three levels. The main content of the group standard and the key issues to be discussed in the standard text were introduced as well. The participating enterprises discussed and exchanged information on the scope, evaluation methods, and relevant indicators of the standards, with a focus on the comprehensive utilization of resources and the generation of pollutants in the evaluation indicators of hydrazine hydrate and ADC foaming agent projects. After the meeting, the drafting group will further supplement and improve the standard text, complete the draft for soliciting opinions, and orderly promote the development and release of the group standard.