Huangshan Wannan Machinery Co. Ltd., formerly Shanghai NO. 7 Machine Tool Plant, is located in the south of Huangshan which is known as the natural and cultural heritage protected area. Specializing in "Hill" brand milling machines and chain transmission products, the company has been awarded as "Top Brand Products of Anhui Province" and "Reputable Brand of Anhui Province". The company has the self-operation export and import right and has gained the certificate of ISO9001 Quality System Certification and Quality Licenses for the Export. The technology center offices in Beijing and Shanghai provide convenience for cooperating with merchants from all over the world.

The company covers an area of 236.000 square meters. Owing to 120 professional and technical personnel, the company possesses the full capabilities of technology development and manufacture. The main products include the Universal Knee-type Milling Machine, the Vertical Knee-type Milling Machine, the Hydraulic Milling Machine, the CNC Milling Machine, the CNC Bed Type Milling Machine as well as the Machine Center and the Chain Transmission Products. The products are sold throughout all provinces, municipalities, autonomous regions and exported to America & Europe, Japan, Southeast Asia, and the Middle East, etc.