Katılımcılar

Shandong Zhongli Steel Pipe Co.,LTD Shandong Zhongzheng Steel Pipe Manufacturing Co., Ltd. was established in 2006. It has 120 million yuan in fixed assets, covers an area of 260 acres, and employs more than 600 people, including 16 senior engineers and 32 technicians. Its annual production capacity is 500,000 tons and sales income is 20 More than 100 million yuan, successively won the honorary titles of Shandong Provincial First-class Credit Enterprise, Provincial Excellent Enterprise, Provincial Quality Management Award, etc.