PCB industry chain
Classified according to the upstream and downstream of the industrial chain, it can be divided into raw materials-copper clad laminates-printed circuit boards-electronic product applications. The relationship is simply expressed as:
Glass fiber cloth: Glass fiber cloth is one of the raw materials of copper clad laminates. It is woven from glass fiber yarn and accounts for about 40% (thick) and 25% (thin) of the cost of copper clad laminates. Glass fiber yarns are calcined in a kiln to form a liquid from raw materials such as silica sand. They are drawn into extremely fine glass fibers through extremely small alloy nozzles, and then hundreds of glass fibers are entangled into glass fiber yarns. The investment in the construction of the kiln is huge, generally requiring hundreds of millions of dollars, and once it is ignited, it must be produced continuously for 24 hours, and the cost of entry and exit is huge. The manufacturing of fiberglass cloth is similar to that of weaving enterprises. It can control the production capacity and quality by controlling the speed, and the specifications are relatively single and stable. Since the Second World War, there has been little change in specifications. Unlike CCL, the price of glass fiber cloth is most affected by the relationship between supply and demand. In recent years, the price has fluctuated between 0.50-1.00 USD / meter. At present, Taiwan and mainland China account for about 70% of the global production capacity.
Copper foil: Copper foil is the raw material that accounts for the largest proportion of the cost of copper clad laminates, accounting for about 30% (thick) and 50% (thin) of the cost of copper clad laminates. Therefore, the price increase of copper foil is the main driving force for the price of copper clad laminates. The price of copper foil is closely reflected in the price change of copper, but the bargaining power is weak.
Copper-clad laminate: The copper-clad laminate is the product of pressing glass fiber cloth and copper foil together with epoxy resin as a fusion agent. It is the direct raw material of PCB. It is made into a printed circuit after etching, electroplating, and lamination of multilayer boards. board. The capital demand of the copper-clad laminate industry is not high, about 30-40 million yuan, and production can be stopped or changed at any time. In the upstream and downstream industry chain structure, CCL has the strongest bargaining power. Not only can it have a strong right to speak in the procurement of raw materials such as fiberglass cloth and copper foil, but as long as downstream demand is acceptable, it can pass the pressure of rising costs. Downstream PCB manufacturers.