1. Prepare SMT chip processing materials in advance (SMD BOM, SMD position coordinates, SMD pictures, templates, etc.) and send them to the processing plant. It is required to prepare the SMT offline program in advance.

2. The SMD materials provided must be accurate (quantity of incoming materials, material specification parameters)

3. The following common problems must be marked on the BOM, and do not ask you to confirm when they are in production. 1. Because the SMT patch factory has two shifts, it is impossible to call you in the middle of the night for night shift production. 2 .If it is confirmed that the incoming material is wrong and the machine cannot be used, you can only put this board aside and paste other models.

1. The incoming resistance class must indicate the accuracy of the component (1% or 5%)

2. Incoming capacitors must indicate the voltage volts of the components

3. If the IC chip diodes and transistors can be used instead, also note on the BOM