... all pigs Specs(mm):400x600 Gap width:10mm cast iron pig floor,cast iron floor,cast iron flooring Cast iron ... Ltd. in 1994 in producing whole set of "Changrong" brand pig-raising equipments, and was in a domestic leading position in ... and construction of the "farrowing crate", "nursing bed", "pregnancy fence", "feed line", "automatic charging bucket", "cast iron flooring", "plastic flooring", "watering ...