Dear, there is a situation in Alibaba now, that is, the other party asks you to come over, and then treats him to a meal, and the meal costs a lot. It is best to disappear after signing the contract, and the actual contract will not take effect. So I suggest you reject him tactfully and just mail the samples. They have time to have dinner and chat with you, and they must have time to look at the samples you sent. Besides, since their procurement volume is so large, it means that the company is not small, and time should be precious. Why do they insist on you going over? Be careful