The lock cylinder adopts a✘♦ ↕ number of anti-theft te₽©<chnologies and a variety of spec€≥ial-shaped anti-pulling bullet♣¶s to prevent technical open₽ εing. With the unique structure design of bullets←π$  and blades, it has high safety performanc₽↕e of preventing technical open  ≤σing. The lock container is equ↔✘ ∏ipped with precision number marble and‍∑☆Ω special-shaped marble structures, which wil>λl be automatically locked when the number<≤ marble and special-sh‍•€aped marble must be pulled at the same time durin∑♥λ®g the technical opening, thus making the technica€★♣l opening fail. The lock cylinder uses a v∞₹®ariety of special-shaped marbles and multipγ$✘le combinations, which ca↑∑n compile up to billi¶&ons of key numbers, thus realizing zero-op₩≠ening of regions (one in 16 million)←". The lock cylinder is added with a side-to-÷♠±side pressure-type side post locki©<ng pin device, which greatly i↓₩‌mproves the ability to prevent violent torsiΩ×πon.

Anti-theft standard
The security level of anti-theft♦π₽← locks is divided into A, B and C levels accor​π‌ding to national standards.
1. Class A lock cylin>‍₹÷der, prevent technical opening ≥ 1 minut∞≥e, anti-drilling ≥ 10 minutes, anti-sawi≤←±ng ≥ 5 minutes, anti-pryi↑®±★ng ≥ 10 minutes, anti-pδ≠™ulling ≥ 10 minutes,¥≤δ∞ anti-impact ≥ 10 minutes.
2. Class B lock cylinder, preventing technical€λ‍ opening ≥ 5 minutes, anti-drillin®↓£Ωg ≥ 15 minutes, anti-‌π¶sawing ≥ 5 minutes, anti-prying ≥ 15 minu↑↕✔Ωtes, anti-pulling ≥ 15 minutes, and anti-impact‍λ  ≥ 15 minutes.
3. Class C lock cylinder, preventing techni>λ§‌cal opening ≥ 10 minutes, anti-drillin®₩g ≥ 30 minutes, anti-sawing ≥ 30 minu™€tes, anti-prying ≥ 30 minut∑β>φes, anti-pulling ≥ 30 min↑π™Ωutes, and anti-impact ≥ 30 minu±λtes.

Classification
Class A: The key is flat o$♠€r crescent, with a row§↓∞> of concave keyway on one sid≠∑e or both sides or a convex keyway ¶♦∑on four sides of the cross;
Class B: The key is flat or cres"'cent, with two rows of conc‌✘←ave keyholes or cylindrical multi-point conc✘©ave keyholes on one or both sides;
Class C: The key is flat, with two ro$₽ws of concave and S-shaped keyway ★•↑↕on one or both sides, or doub↑‍✔le snake keyway inside and outsiπ♠de;

Purchase Standard
The safest lock cylinder ha✔©s been upgraded to Class B and C "γlass C. It is best to choose Class C when"∞♥ purchasing.
The first move: I used to bu≈γφ y a lock to judge the quality of the lε∏<ock cylinder by the •∞number of key teeth. It mainly depe¥®€εnds on the structure of the lock " cylinder. The blade side column structur★♥e is often much better than the traditional ma©‌£rbles structure. When pi‌ ✘cking a lock, it is better to ask a p✘®≈rofessional teacher for advice  ✘•and then pick it accordinα±↓g to the situation.
The second move: pick the lock and weigh two,±≈¶ one than the weight an₩✔&☆d two to look at the lock cylinder. The h<< γeavier the weight, the better theα✔¥ quality of the lock cylinder, and the more ↔× βbeads in the lock cylinder, the better the ✔↓↓anti-theft function.
The third trick: choose the lΩβock cylinder to see the color, and compar★≈ e the color to see the workmanship.Ω∞Ω The good quality lock cδ ✘♠ylinder adopts electroplating treatment, the s∏εφurface is smooth and the color is bright.&→≠™ Among them, the dark yellow>α color is copper core, which is relatively stro&γ"ng and has good anti-theft performance. The™$  lock core is dim in color and zinc alloy is₹∑π↑ gray and has bubbles. The anti-theft pαδσ≥erformance is general.<←★✔
The fourth trick: The anti-theft performan λ≈ce of the key is poor wh←γen the key is inserted into the loc§≠₹​k cylinder. After the key is half insπ≠erted, use 5 to 7 component forceφ≠≈£ to rotate clockwise or count₹‍§βerclockwise and continue to press≤₹♠♦ the key into the lo $ ck port. The stuck key indicates that the lock ☆∞cylinder has anti-theft per​≤Ωformance. Poor, smoothly i÷"nserting the lock cylinder in a half-rotation s↕₽ ​tate indicates that the anti-theft effect is g←πood.