Shandong Zhangqiu Blower Co., Ltd. was changed from Shandong Zhangqiu Blower Factory Co., Ltd. (formerly known as Shandong Zhangqiu Blower Factory), with over 50 years of technology and experience in fan design, production, and manufacturing. It has a holding subsidiary, two Sino Japanese joint ventures, and has established a branch in the United States. The company has formulated an overall development strategy of "extending its main business, innovating with new ideas, joint ventures and cooperation, and developing big chapters", and put forward the work concept of "doing is doing the best". After continuous development, it has become a modern mechanical processing scale enterprise integrating the design, production, and sales of Roots blowers, centrifugal fans, industrial pumps, ventilation fans, industrial water treatment engineering and equipment, pneumatic conveying complete systems, electrical equipment, MVR evaporation concentration and crystallization technology and complete systems, new energy lithium titanate batteries and other products. The industrial park covers an area of 430000 square meters, providing broad development space for enterprises to leapfrog development and joint ventures with enterprises from around the world. The company was successfully listed on the Shenzhen Stock Exchange on July 7, 2011, with the stock code 002598. Shandong Zhanggu is a professional manufacturer of large-scale Roots blowers, and is the vice chairman unit of the China General Machinery Fan Association. It is also the main drafting unit of the national standard for Roots blowers. The "Zhanggu" and "Qilu" brand Roots blowers have been recognized as "Famous Trademarks of Shandong Province" honorary titles. The company has successively won the titles of "Top 100 Economic Benefit Industrial Enterprises in China's General Machinery Manufacturing Industry", "Top 10 Independent Innovation Abilities in General Equipment Manufacturing Industry such as Fans and Weighers" in 2005, and "Top 500 Machinery Enterprises in China"