If you buy online, it is more reliable to go to the regular Tmall flagship store and JD.COM store. Choose one with good reputation and good quality. You can visit SVAKOM's flagship store in JD.COM. The product is good, and JD.COM supports cash on delivery. Just choose the payment method when placing an order. You should choose good things and be responsible for your health. You can also choose to go to a physical store, but it is best to go to a bigger store, if you are not afraid of embarrassment.