Entering the PCB prototype factory, the first thing to see is the cutting process, where copper plates of various thicknesses (from 0.4mm to 2.0mm) are cut into appropriate sizes, laying the foundation for circuit board production. This step may seem simple but it is actually very important. If the board size design is not suitable, a lot of edge waste will be generated during the PCB production process. PCB sampling manufacturers will add the price of the waste edge to the customer's board, increasing the unit price. Improving the utilization rate of raw materials as much as possible is an important measure taken by Jiali Chuang to lower the unit price.

　　Then you see the drilling workshop, where the large and small holes on the circuit board are for inserting electronic components or through hole jumpers. This process is completely operated by computer numerical control, and the machine sets the size and coordinates of the through-hole according to the circuit. The accuracy requirements for drilling are high to ensure the correct position and size of the holes.

　　In order to ensure the quality of the circuit board, there is a high requirement for the substrate, which requires no dirt such as oxide layer, oil stains, dust, etc. The staff wear masks to operate.

　　Next, we will visit the V-cutting workshop and the flying needle testing workshop. The V-cutting process uses an automatic V-cutting machine to make V-shaped cuts on the front and back sides of the connected PCB boards at the connection points, but they do not cut thoroughly. They can be easily broken with a gentle break, making it convenient for customers to split the board and ensuring that the board edges are free of flash and burrs.

　　Flying needle testing is an important process for accurately detecting whether the PCB circuit is normal. If some abnormal situations during the manufacturing process result in short circuits, open circuits, or poor contact, they will be detected in this step. At present, Jialichuang has completed jumper testing through a computer automation system, greatly ensuring the reliability of PCB board connectivity.