... ,ISO9001 layer cage lifespan:28-year design layer chicken farm egg Layer cage detailscage structure Black to black, 2 floors, 3 ... cage and Poultry equipment, Paper egg tray and Plastic egg tray, Metal wire mesh and Fence mesh for many years, from raw materials ... cage and Poultry equipment, Paper egg tray and Plastic egg tray, Metal wire mesh and Fence mesh for many years, from raw materials ...