When signing for receipt, please open the box and check the quantity in the presence of the delivery personnel. After confirming that the purchased goods are correct, sign for acceptance. If the packaging is damaged or the goods or accessories are missing, please refuse to sign and contact online customer service in time. Sign for(Authorizing others to sign on behalf of others also defaults to signing for themselves)It means that you have counted and confirmed all the products. After you sign for it, you will not be responsible for compensation for missing products, accessories, etc. and appearance damage.