Productintroduction : The inner lining is an essentialpart of the modern farming industry and is widelyused in milking machines, milk parlors, and milkingcups.The common lining is made of rubber materialand silicone material. SGS/FDA certification; morethan 10 specifications for selection, suitable for cattleor goats; use of high-quality non-toxic and tastelessrubber rubber, to ensure that the milk will not besecondary pollution; European standards 2500 timesor 6 months replacement