人妖videosex高潮另类I97男人的天堂I国产三级av片I久久99精品久久久I国产不卡精品视频I国产区精品I国产精品理论片I超碰pronI亚洲午夜久久久久久久久久久I自由 日本语 热 亚洲人I风韵丰满熟妇啪啪区老熟熟女I亚洲在线看片I日韩人妻无码精品久久久不卡I亚洲九九I香蕉色网I成人美女毛片I一区二区三区av夏目彩春I三上悠亚亚洲一区I色综合视频网站I天天想夜夜操

Wang Zhongshi (male, born in 1939, CPC member, professorate senior engineer, national labor model, and awarded special government allowances of the State Council) is an expert in heavy nonferrous metal smelting, and now serves as the senior consulting expert of China ENFI Engineering Corporation.

He is one of the experts that mastered earliest new technologies related to the “closed blast furnace for lead smelting”, and organized the key project - Northwest Lead and Zinc Smelter in the Seventh Five-Year Plan and the Eighth Five-Year Plan.

He has undertaken the design, scientific research and technical guidance of more than 40 large- and medium-size nonferrous metal smelters. His footprints can be found in copper, lead, zinc and gold smelting enterprises all over the country (Northwest Lead and Zinc Smelter, Shanghai Smelter, Tongling Nonferrous Metals Smelter, Xinjiang Smelter, Yunnan Smelter, Shenyang Smelter, Henan Zhongyuan Gold Smelter, Zhuzhou Smelter, etc.). A range of smelting enterprises located in different parts of the country, whose design was conducted by him, are running fruitfully and playing a decisive role in the nonferrous metals industry of China. Together with his colleagues, he creatively solved many technical problems in the fields of heavy nonferrous metals smelting, and especially, made outstanding achievements in lead and zinc smelting. He’s one of the experts that mastered earliest new technologies related to the “closed blast furnace for lead smelting”, the program developer and major participator of industrialization test of Xidatun Zinc Smelter (the first zinc smelter with electric furnaces in China), and the preliminary designer for replacing reverberatory furnaces and manual casting with low-frequency induction furnaces and disc casting machines in zinc smelting. He played a pioneering role in promoting and applying new processes, technologies and equipment for nonferrous metals smelting, and made achievements one after another.