... all pigs Specs(mm):400x600 Gap width:10mm cast iron pig floor,cast iron floor,cast iron flooring Cast iron floor ... ., Ltd. in 1994 in producing whole set of "Changrong" brand pig-raising equipments, and was in a domestic leading position in ... plate", "fan", "wetted pad", "hot air stove", and the entire pig farm, filling in many domestic gaps.