My experience is: if it's yours, it's always yours, and if it's not yours, it's not yours no matter how hard you push it. It's right to keep in touch with customers and communicate frequently, but don't make them feel that you're pushing them. Even if the customer confirms the quality of the sample and has no objection to the price, it's not necessarily a customer who will place an order. There are several types of customers: those who really have demand, those who are trying to find out the market, those who are developing this product, etc. Only when the customer is in the market and has demand will he place an order quickly. If the customer is trying to find out the market, it's not impossible to place an order, but often you need to have a clear advantage over his current supplier before he will consider changing the purchasing channel. As for customers in the market development stage, expectations cannot be too high, and customers often need a longer time. What we can do is to cooperate with customers as much as possible, fully demonstrate our strengths, advantages, etc. during the contact process, and make us the preferred supplier for customers to place orders.