... steel ,white PVC manger, ball valve type automatic water equipment, white PVC water pipe, 3MM U type steel galvanized ... damage rate of eggs is zero.3.White PVC trough, full new PVC material, resists compression, heat-resistant, not deformation, ... are our contact information,China County Silver Star Breeding Equipment Limited Liability CompanyWelcome to our factoryWebsite http://www.yxbreed.com ...