1.1 What is PCB
PCB (Printed Circuit Board) is a printed circuit board, abbreviated as a printed circuit board, which is a support body for electronic components and a carrier for electrical interconnection of electronic components. Because PCBs are made using electronic printing techniques, they are called "printed" circuit boards.
The main function of this product is to make various electronic components form the connection of the predetermined circuit and play the role of relay transmission. Printed circuit boards are the key interconnects for assembling electronic parts. They not only provide electrical connections for electronic components, but also carry business functions such as digital and analog signal transmission, power supply, and RF microwave signal transmission and reception for electronic equipment. Most electronic equipment and products need to be equipped, so it is called "the mother of electronic products".

1.2 PCB domestic replacement rhythm
According to the statistics of the Hong Kong Circuit Board Association, in 2000, the global PCB market share of Chinese mainland companies only accounted for 8.1%, and Japanese and American companies were firmly in the leading position in PCB output value. From 2000 to 2017, the PCB industry in mainland China developed rapidly, production capacity continued to increase, and technology was steadily upgraded. In 2017, only the global PCB market share of mainland Chinese companies increased to 50.52%. According to PR Newswire data, in 2020, the PCB market share in mainland China will remain above 50%, and will steadily increase to 53.80% in 2020.

1.3 PCB upstream raw materials
The industry chain of PCB is clear. The upstream materials include copper foil, resin, glass fiber cloth, wood pulp, ink, copper ball, etc. Among them, copper foil, resin and glass fiber cloth are the three main materials.

1.4 PCB Raw Material Cost Analysis
The cost of PCB is mainly divided into material cost and labor cost, of which material cost mainly includes copper clad laminate, copper foil, phosphor bronze ball, ink, etc. Among the cost of PCB, the labor cost accounted for the highest, about 40% of the total cost; among the single materials, the cost of copper clad laminate was the highest, accounting for 30% of the total cost; the cost of copper foil, phosphor bronze ball and ink was lower, respectively Occupy 9%, 6%, 3% of the total cost.
CCL occupies an important position in PCB raw materials, and its cost accounts for 30% of the total cost of PCB. Among the raw materials of CCL, the cost of copper foil is the highest, about 39% of the cost of CCL; the cost of glass fiber cloth and resin is lower, accounting for 18% of the cost respectively. Since the copper clad laminate is greatly affected by the price of copper, the price that indirectly affects the PCB presents a certain periodicity.

1.5 Differences between different PCBs
The thickness of rigid PCB is different from that of flexible PCB, and flexible PCB can be bent. Common thicknesses of rigid PCBs range from 0.2mm, 0.4mm, 0.6mm to 2.0mm. A common thickness of a flexible PCB is 0.2mm. HDI is a high-density interconnected circuit board. The vias of HDI have blind holes or buried holes. The processing technologies used are micro-blind and buried holes and laser drilling, which have high processing accuracy and low cost. The ordinary circuit board drilling is mainly mechanical drilling, and only through holes make the internal connection of each layer of the circuit.

1.6 Panorama of PCB Industry Chain
As the key electronic interconnection of electronic products, PCB connects many upstream and downstream industries. Upstream industries: copper foil, copper foil substrates, glass fiber cloth, resin and other raw material industries; downstream industries: electronic consumer products, automobiles, communications, aerospace, military and other industries. Midstream substrate: mainly copper clad laminate (CCL), which is processed from raw materials such as copper foil, epoxy resin, and glass fiber yarn. The PCB industry chain is long, and special wood pulp paper, electronic-grade glass fiber cloth, electrolytic copper foil, CCL (copper clad laminate) and PCB (printed short-circuit board) are the upstream and downstream products that are closely connected and interdependent in an industry chain.

NextPCB Electronics, established in 2011, is a leading one-stop service platform for the electronics industry in China and a national high-tech enterprise. With the business philosophy of "customer-centric, pursuit of the ultimate experience", it has laid out electronic industry services such as electronic enthusiasts network, solution design, component e-commerce, PCB manufacturing, SMT manufacturing and PCBA manufacturing, and has provided 300,000+ customers around the world. High quality, short delivery time, cost-effective one-stop servic.

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