Do I need to charge a deposit for customizing non-standard screws online?

Do I need to charge a deposit for customizing non-standard screws online? Yu Wenlong, a fastener consultant, believes that no matter whether you customize non-standard screws online or offline, you need to collect a deposit, unless you are a very powerful enterprise with a very good reputation and a long cooperation time.

Yu Wenlong, a fastener consultant, thinks it's best to verify the relevant information by himself. Everything I got online was fake. If you don't know how to pretend, you can answer casually. It is simply false or deceptive, and it will directly harm you. The light products are unqualified, and the heavy ones will be fined. Of course, Yu Wenlong, the fastener consultant, thinks that if you have the strength, it is also a good choice to ask the fastener consultant to refer to your technology, grasp the development direction of the enterprise, locate products and customers.