Li Wenqiang, the chief engineer of Dalian Huabang Chemical Co., Ltd., faced the difficulties in the field of gas purification equipment in the domestic semiconductor industry, led the staff innovation team to adhere to technical breakthroughs, broke the situation that foreign purifiers had monopolized the semiconductor industry market for a long time, and solved the "choke" problem of high purity semiconductor material gas in China, It will continue to make "blood" for China's semiconductor industry@ Dalian High tech Zone Federation of Trade Unions