1) Surface treatment: * code disc: plating, nickel sweep * base: powder, black * lock: galvanized 2) Material: zinc alloy + Cu) 3 groups are free to type your password compiled into 100,000 combinations password 4) axis: square, according to the thickness of the safe door cutting 5) latch type: fixed bolt 6) at room temperature (25 ℃) 50,000 times opening and closing test OK 7) around the familiar left dialing sequence for easy one-hand operation 8 ) have changed the design to operate secret bar change secret 9) can be installed in four directions, until up; chase down; parallel to the left; 10 parallel to the right) can be used for home banking safes, safes, gun cabinets , ATM machines, etc.