elevator control panel : Layer:10-layer Base material:FR-4 UL ... software system design and software decryption, Development of electronic control board, Remote control, LED related product, PLD decryption, CPLD decryption, ... 1 ~ 34 layers, with FR4, FR5, Aluminum, Copper, Metal core, Polyester material and other material that you have in ... are being tested before final shipping. Elevator Control Panel