What are the classifications of PCB copying based on the type of substrate?
1. Flexible PCB board
Flexible board is a circuit board made of flexible substrate, which has the advantage of being able to bend and facilitate the assembly of electrical components. PCB has been widely used in fields or products such as aerospace, military, mobile communication, laptops, computer peripherals, PDAs, and digital cameras.
2. Rigid PCB board
Rigid circuit board copying is made from paper based (commonly used on one side) or glass cloth based (commonly used on both sides and multiple layers), pre impregnated with phenolic or epoxy resin, and coated with copper foil on one or both sides of the surface, and then laminated and cured. This type of PCB copper clad foil board is called a rigid board. To remake a PCB, we call it a rigid PCB. A rigid PCB is a printed circuit board made of a rigid substrate that is not easily bent and has strong toughness. Its advantage is that it can provide certain support for the electronic components attached to it.

3. Soft and hard combination circuit board
A soft hard combination circuit board refers to a printed circuit board that contains one or more rigid and flexible areas, composed of rigid and flexible boards laminated together. The advantage of a rigid flexible combination board is that it can provide both the support of a rigid printed board and the bending characteristics of a flexible board, which can meet the needs of three-dimensional assembly.
The above is the PCB copying board classification based on the type of substrate introduced by the editor. I hope it will be helpful for everyone to read it.