What are the skills for sending samples? As long as you are willing to send it, it is good to send it on time. Unless you want the customer to pay the freight and sample fee, you need to communicate with the customer well. It can be said that you are happy to provide samples for your customers, but since you send a large number of samples every month, this cost cannot be ignored. So your company only provides free samples now, and the express freight is borne by the customer. I hope customers can understand.