Membrane switch circuit layer using FPC (flexible PCB). Circuit of high precision, the minimum qualifying spacing can do 0.5mm, the resistance value is very low, can be welded LED, resistors, fiber and other small components, stable and reliable performance, long service life. The products are mainly used in medical devices function keyboard, feel good, powerful. F150 Shamian panel with Autotype PET, Haven this product according to customer needs to design key content, color, effect, the appearance of fine, rich colors. In addition, the product includes an electrostatic shielding layer, so good antistatic effect of the product.