What is the biggest factory that closed down in Shanghai?

Shanghai zhongji pile industry. Shanghai Zhongji Pile Industry Co., Ltd. was established in June 2005 +0 1. By the end of 2009, its total assets have exceeded 500 million yuan, and it has more than ten production bases in Jiangsu, Zhejiang, Shanghai, Tianjin and other provinces and cities, with more than 1000 core employees. The company is the largest leading enterprise in the production and sales of centrifugal square piles in China, and its products are mainly used in the basic engineering construction of railways, highways, bridges, ports and docks, water conservancy, municipal, industrial and civil construction industries. Since its establishment, the company has always adhered to the concept of "being an innovative enterprise in traditional industries" and paid attention to the research and development and innovation of traditional products.