Shandong Tobetter machinery co., LTD. Is located in \\\\\\\"hometown of Confucius, formal state\\\\\\\", \\\\\\\"shandong jining, is a collection research and development design, production, sales, installation and after-sales service as one of the professional high-tech enterprises.Professional manufacturing laying hens cage, chicken cages, brood cage, negative pressure fan, evaporative air cooler, water, ventilation cooling engineering and undertake farms and facility.