Types of FPC reinforcement, we usually only use three types of reinforcement. PI polyimide, FR4 and steel sheet.

1. PI reinforcement: tolerance can be controlled in +/ -0.03mm, high precision, high temperature resistance (130-280 degrees Celsius)
2. Steel sheet reinforcement: manual assembly is required, the process is more complex and the cost will be higher.
3. FR4 reinforcement: if the thickness is less than 0.1mm, the tolerance can be controlled at +/ -0.05mm. If the thickness is greater than 1.0mm, the tolerance is +/ -0.1mm

FPC reinforced thickness
1. PI reinforcing thickness: 0.075mm, 0.1mm, 0.125mm, 0.15mm, 0.175mm, 0.2mm, 0.225mm, 0.25mm
2. FR4 reinforcement thickness: 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 1.6mm
3. Steel sheet reinforcement thickness: 0.1mm, 0.2mm