Express delivery has the first standard. If the weight exceeds the first weight, the renewal fee will be charged according to the kilogram. There is no extra charge for bags packed by express delivery, but cartons will be charged according to their size. Generally, express delivery provides boxes and bags to pick up the goods. According to their own needs, the courier company will calculate the detailed cost. You can also place an order in the official WeChat account of the courier company, and pay attention to the need for boxes or bags in advance.