Four-Door Network Gate Access Control Board 1.Four door controlled 2.Connected with 4 card ... , software system design and software decryption, Development of electronic control board, Remote control, LED related product, PLD decryption, CPLD decryption, ... Aluminum, Copper, Metal core, Polyester material and other material that you have in mind. With the following board finishes. OAL, Immersion gold ...