Wang specializes in producing sows big bed, conservation field, location bar, pig equipment such as incubators bed, also known as high culture sows farrowing crates, mainly by spacers sow, sow piglets bed fence, piglet incubator , fecal leakage flooring, sows and piglets fill the trough trough and other components. Role is to control the positioning frame sow sows freely regional and lying ways, there are bars between the fixed gear frame beds sows, piglets to avoid being crushed, trampled and crushed. The length of the spacer is generally 2.1-2.3 m, a width of 0.6 m and a height of 1.0 m. Limit the lowermost one frame welded curved railing above file column to protect piglets without affecting pigs feeding. Sow manger and drinking in front of the spacers.