Zhao Changshen, Director of Energy and Chemical Research Institute and Manager of Equipment Management Department of Inner Mongolia Erdos Electric Power Metallurgy Group Co., Ltd., senior engineer. Won the title of annual equipment management leader of China Equipment Management Association, youth innovation and entrepreneurship talent (the first level) of the autonomous region grassland talent project, etc. He continued to carry out technical breakthroughs from "people, machines, materials, methods, environment and measurement" to extend the service life of mercury catalyst. Through continuously strengthening lean management of mercury use, he continued to reduce the consumption of mercury catalyst, achieved 36.7g of mercury per ton of PVC, reached the domestic leading level, and obtained the certification of "Global Environment Facility China PVC Production Mercury Reduction and Minimization Demonstration Project". He led the project team to complete the cost reduction of chlor alkali polymerization additives through simulation optimization, reducing the cost of additives from 118 yuan/ton of PVC to less than 95 yuan/ton of PVC, and directly reducing the cost by more than 12 million yuan@ Inner Mongolia Autonomous Region Federation of Trade Unions