Hello, although the authenticity rate on Tmall is still very high, it is not certain that it is genuine. Yili skimmed pure milk bought at Tmall supermarket may be fake. Counterfeit products of Yili milk are still rampant in the market. When buying Yili Jindian pure milk, you must not buy it from random channels, otherwise the quality of the product will be difficult to guarantee. Try to buy it from physical stores such as large supermarkets. If you purchase online, you need to choose an officially authorized flagship store to purchase. If the milk packaging is blurry, be wary of buying fake ones. Normally, the handwriting on genuine Yili pure milk packaging is very clear and powerful, while fake ones will be blurry. Hope it helps.