Opening unit is made from advanced nylon,high strength and long service life.
Turning unit with bearing makes the opening process smarter.
When fan starts work, the windows are opened quickly under the centrifugal force.

Customizing order also is welcomed!    

    Goldenest Machinery (Qingdao) Inc. is the professional enterprise which engaged in the design, research, and manufacture of the husbandry of poultry and livestock. 
    We have the most powerful R & D deparment and advanced equipment to manufacture our products.  Exclusive auger production line imported from Germany have been used on Feb.2000.

    Our products have been exported to more than 60 foreign countries, and also provide to many large scale farms in China.  We have 25 engineers in designing and manufacturing auto feeding systems to poultry and pigs, as well as nipple drinking system, ventilation system, environment control system, and egg collecting system. All of them are designed by CAD / CAE / CAM systems with ISO9001: 2000 /CE certified .

   Welcome to visit our company and contact us ,hope to get a good cooperation in future.