Let me tell you clearly that they are fraud companies. They demanded payment before delivery on the grounds of selling photosensitive materials. First of all, they ask for full payment, which depends on the attitude of customers. They can also compromise to half or even 30%. They can cheat a penny to calculate a penny, then take the money and stop delivery, and then hang up as soon as they hear you call for delivery. They will only answer the phone calls from strangers, and they will hang up when they hear the delivery call! Because the amount of fraud is small, the local public security will not approve such cases, and because there is no money, the deceived person will eventually go away!
So I hope everyone will not be fooled!