... bridge steel ,white PVC manger, ball valve type automatic water equipment, white PVC water pipe, 3MM U ... rate, Reasonable space arrangement, Make accident mortality of chicken in the cage is zero, damage rate of eggs ... life is for 15 years.5.Ball valve type automatic water equipment: 360-degree rotating design, big flow ... http://www.yxbreed.com.cnTrade Manager cn220194274 chicken cage poultry farm