Guo Dong Zhang

Zhengzhou Hengda Intelligent Control Technology Co., Ltd. engages in the design, production, maintenance, sales, technical consultation and after-sales service of engineering mechanical equipment for coal mine system. It offers coal mining mechanical equipment and accessories, engineering and coal mechanical electro-hydraulic control system, coal machine products, industrial automation system products and accessories, integrated intelligent fluid supply system, centralized control system, industrial robot system products and related products accessories. The company was founded on April 14, 1999 and is headquartered in Zhengzhou, China.

Zhejiang Shangfeng Special Blower Industrial Co., Ltd. engages in the research and development, production, and sale of ventilation system equipment. Its products include fan equipment, ventilation system supporting equipment, and air conditioning equipment. The company was founded in 1974 and is headquartered in Shaoxing, China.