This kind of handwork is very risky at present, so we must be careful. If you are too far away from home or online, don't participate. The other party will take your deposit, or ask you to pay for the materials and equipment, and will sign a contract with you, but the products you make will never be qualified and will never meet the so-called requirements of the other party. If the other party refuses to pay on the grounds of quality, you have nothing. Finally, the other party sells you a bunch of materials and equipment in disguise. So don't participate with a lucky attitude. Once you fall into the trap, there will be endless trouble.