Anti-theft door lock key cross good or flat good
You are better cross 14 is more complex and change, suitable for the first door
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The cross is better than the flat cross is very difficult to open the flat is not the same friends
Super B-level lock: the key shape for the single-sided blade within the milling groove or outside the milling key, the cylinder type for the side of the cylinder; by the Ministry of Public Security detection 270 minutes can not be technical open, the regional opening rate of zero (1,600 One ten thousandth). The ball structure for the double-row blade plus V-shaped side of the lock; if the use of strong twist tool to open the lock cylinder, cylinder internal damage, blew lock, resulting in can not open.
B-level lock: B-key lock for the flat key, a double row of the ball slot, with the A-level lock is different from the key surface of a row of curved irregular lines. The main type of lock cylinder is 3, the computer double row cylinder, double row crescent cylinder, double blade cylinder core. Anti-technical open time 5 minutes, the mutual high rate. Through the torsion tool, 1 minute can open the cylinder.
A-level lock: Currently on the market A-level anti-theft lock key is a word key and cross key. A-level cylinder internal structure is very simple, limited to the changes in the ball, the ball slot less shallow. Anti-technical open time 1 minute, the opening rate is extremely high. The ball structure is a single row of balls or a cross lock.
