Nws tuaj yeem siv los ua cov khoom noj khoom haus lossis dej trough.1.Sheep yas feeder txais kev siv thoob ntiaj teb kev txhaj tshuaj molding tshuabkev tiv thaiv ib zaug thiab ruaj khov
2.High siv ib puag ncig tiv thaiv yas, nyab xeeb uas tsis yog-tshuaj lom.3.Products ntxiv antioxidants, tshuaj pleev thaiv hnub.Antifreeze, thiab lwm yam., tsis ntshai ntawm lub hnub, huab cua tiv thaiv qhov kub ntawm qhov qis tshaj 40 degrees 4.Kev lag luam thiab siv tau, yooj yim los ntxuav cov khoom seem.