Yongjiang Zhang, male, born in 1956, party member, manager of Beijing Environmental Technology Development Company, Dongcheng District, Beijing. Zhang Yongjiang was originally a garbage loader in the Second Team of Dongcheng District Environmental Sanitation Bureau, with a sixth-grade education. He became a worker inventor and entrepreneur by self-education. In early 1994, he invented the "obstacle-cleaning sucker" and obtained a national patent, which was successfully applied to the road sweeper he invented. This product won the Beijing Outstanding Invention Award and the gold medal of the fifth China Patent and Technology Expo. In June, 1994, he became the manager of Beijing Environmental Science and Technology Development Company. He led the staff to make positive progress, and successively developed more than 1 products such as pure sweeper, multifunctional full-automatic guardrail cleaning vehicle, garbage briquetting unit and hand-driven sweeper, accounting for more than 4 scientific and technological innovations, of which 11 won national patents and 3 won national patent technology awards. The products he developed are exported to more than 2 provinces and cities across the country, creating sales of more than 4 million yuan and profits of more than 1 million yuan. In 21, the collective he led won the honorary title of "Beijing Economic and Technological Innovation Enterprise" and the "National May 1 Labor Award" issued by the All-China Federation of Trade Unions.