The lock cylinder adopt" ↑s a number of anti-theft technologies and a vari₹≤€πety of special-shaped anti♣π•£-pulling bullets to p​ revent technical opening. With the unique stru×''¥cture design of bullets and blades, it has high ♠☆₩safety performance of pr✔Ωeventing technical opening. The lock conta✘≥≠iner is equipped with precision number marbαα↑σle and special-shaped marble structures,≤'∏± which will be automat γically locked when the number marble ∑→and special-shaped marble must be pulled a∏₩₽'t the same time during the technical o♣±pening, thus making →εthe technical opening fail. The l©γ×​ock cylinder uses a variety of special-♠Ω¥♣shaped marbles and mul→®§ tiple combinations, which canβ✔€$ compile up to billions of ke ←>y numbers, thus realiz±σing zero-opening of regions ​↓Ωα(one in 16 million). The lockσ♥β" cylinder is added with a side-toδ÷-side pressure-type side post locking pin devλσice, which greatly improves the ability t∏↓o prevent violent torsion.

Anti-theft standard
The security level of anti-theft locks is divi"★ded into A, B and C levels according to nation☆™λ>al standards.
1. Class A lock cylinder, prevent≤< technical opening ≥ 1 minute, anti-drilling ≥ 1✘←​φ0 minutes, anti-sawing ≥ 5 minutes, ™ εanti-prying ≥ 10 minutes, an®  ti-pulling ≥ 10 minutes, anti-impact ≥₽π​✘ 10 minutes.
2. Class B lock cylinde§€ αr, preventing technical&‍π opening ≥ 5 minutes, anti-drilling ≥ 15 m↕"inutes, anti-sawing ≥ 5 minutes, an¥∑☆ti-prying ≥ 15 minutes, anti-pulling ≥ 15≈$ minutes, and anti-iπγ∏mpact ≥ 15 minutes.
3. Class C lock cylinder, preventing tec"♦λ↔hnical opening ≥ 10 min€δ<utes, anti-drilling ≥ 30 minutes, anti-sawi&π£®ng ≥ 30 minutes, anti-prying ≥ 30 mi€π÷nutes, anti-pulling ≥ 30 minutes, and an &×σti-impact ≥ 30 minutes.

Classification
Class A: The key is flat or crescent, with a roπ™∏w of concave keyway o§✘₩₽n one side or both sidσ★es or a convex keyway on four sides of the cros≠≤s;
Class B: The key is flat or cres•​cent, with two rows o"©f concave keyholes or cylindrical multi-poi ‌ ↑nt concave keyholes on one or both sides;
Class C: The key is flat, with two rows↑±δ↔ of concave and S-shaped keyway on one or both si¶☆γdes, or double snake keyway insid"‌↕♣e and outside;

Purchase Standard
The safest lock cylinder ha•∞"s been upgraded to Class B and←¥©• Class C. It is best to₹♥​♠ choose Class C when purchasing.
The first move: I use♦×←<d to buy a lock to judge the qε >uality of the lock cylinder by the  ♥number of key teeth. It mainly depend ÷±s on the structure of the lock cylindε'er. The blade side column structure is♦λ✔ often much better thλ¥&★an the traditional marbles structureπ>¶. When picking a lock, it ∑π∞Ωis better to ask a professional teacher for advic§‌&δe and then pick it according to the situati®♥♦on.
The second move: pick the lock and weigh two<≥, one than the weight and two to l‍ §®ook at the lock cylinder. The ★∑•heavier the weight, the betteΩ≈r the quality of the lock cylinder, and the more ε∑"beads in the lock cylinder, the better "§&the anti-theft function.
The third trick: choose the lock cylinder to s∞δ♥♦ee the color, and compar​Ω≤$e the color to see the workmanship. The g←β₹×ood quality lock cylinder adopts elec‍ ≠troplating treatment"≠♥, the surface is smooth and the color is brigh↓™ ‌t. Among them, the dark yeΩ¶∏llow color is copper core∞∏, which is relatively strong and has go '↕od anti-theft performance. The lo ←∞≤ck core is dim in color and zinc allo×≥£y is gray and has bubbles. The anti-theft perfo¶ε£rmance is general.
The fourth trick: The anti-thef₽↔t performance of the key  Ω₽€is poor when the key is inserted into theφ∑•♦ lock cylinder. After the key is half insert♥α>ed, use 5 to 7 component force to rotβ∑♣€ate clockwise or counterclockwise and conti↕&ε nue to press the key into the loc§↔k port. The stuck ke"♣y indicates that the lock cylinder has ant Ωi-theft performance. Poor, smoothly inserting the♣•☆ lock cylinder in a half-rotation state π↓§indicates that the anti-theft effect is good↕® .