If no one handles the after-sales service of 1688, you can contact the platform customer service for processing. Generally, many manufacturers on Alibaba are quite busy. There is a phone number on it. If no one answers your question on Wangwang, you can contact their company's phone number. Generally, all users on Alibaba are Chengxintong users, so they all have a phone number. You can directly contact the person in charge. If no one responds, you can apply for customer service intervention