The lock cylinder adopt ∑β&s a number of anti-theft teπΩchnologies and a variety of special-shaped ←♥$anti-pulling bullets to prevent technical λ'¶opening. With the unique str★×ucture design of bullets and blades,  ≈★∏it has high safety pe♠‍↔rformance of preventing technical op↓σ± ening. The lock container is equip♣≈‌ped with precision number ₽≤£ marble and special-shγ'aped marble structure♥★πγs, which will be automaλ™tically locked when the number marble and$ε special-shaped marbl♣↓♥σe must be pulled at the same time during ♣‌←÷the technical opening, Ω← thus making the technical opening fail.←≠♣ The lock cylinder uses a variety of spe→×₹§cial-shaped marbles and m∑✘₩ultiple combinations, which can compile→ ₽ up to billions of key numbe£®ε↕rs, thus realizing zero-open↔α♥ing of regions (one in 16 million). The lock cyl<λβinder is added with a side-t'<o-side pressure-type±∑ε side post locking pin device, which β'±♠greatly improves the ability to preven ±→t violent torsion.

Anti-theft standard
The security level of ant↑‍λ↔i-theft locks is dividedφ≥ into A, B and C levels££≥  according to national standard≠π€•s.
1. Class A lock cylinder, prevent tec δhnical opening ≥ 1 minute, ant€←¶i-drilling ≥ 10 minutes, anti-sawi★©₩γng ≥ 5 minutes, anti-prying ≥ 10 minutes,₩∞ε• anti-pulling ≥ 10 minutes, anti-impac'∏'t ≥ 10 minutes.
2. Class B lock cylinder, preventing technic™₽"&al opening ≥ 5 minut<∞es, anti-drilling ≥ 15 minutes, anti-sawing ≥ 5✘≈♠♠ minutes, anti-prying ≥ 1××σ5 minutes, anti-pulling ≥ 15 minutes, aβ₽nd anti-impact ≥ 15 minutes.
3. Class C lock cylinder, preven♣✔¶•ting technical opening ≥ 10 ≥♠<'minutes, anti-drilling ≥ 30 minutes, anti-saw"€β•ing ≥ 30 minutes, anti-prying ≥ 30 minutes, a↔‍ nti-pulling ≥ 30 minutes, and anti-impac→§t ≥ 30 minutes.

Classification
Class A: The key is flat₽&‍ or crescent, with a row of concave k®§eyway on one side or both sides≤☆♣♦ or a convex keyway on four sides of the cross;→≥
Class B: The key is flat or cre♠ΩΩscent, with two rows of concave keyholes or ™≥cylindrical multi-point conc∞<↓₽ave keyholes on one or both sid→"es;
Class C: The key is flat, wit ∏λ®h two rows of concave $ ε'and S-shaped keyway  " on one or both sides, or double snake keywa •÷y inside and outside;

Purchase Standard
The safest lock cylinder has beenβ✔≈∑ upgraded to Class B and Class C. It is b""est to choose Class C when​£" purchasing.
The first move: I used to buy a lock to juσ‍≈dge the quality of the lock cylinder b₽₩£y the number of key teeth'Ω₹. It mainly depends on the structure of the l₩™ock cylinder. The blade side column structure is  δ often much better than the traditio<♠₩nal marbles structure. When picking a loΩβπ÷ck, it is better to ask a professional teach₽$Ωer for advice and then pick ÷§it according to the situation.
The second move: pick the ↕ lock and weigh two, one than Ω ®the weight and two to look at ®'γthe lock cylinder. T←&βhe heavier the weight, the better thλ‍₹e quality of the lock cylinder, and α'the more beads in the lock c©β®£ylinder, the better the anti-tπ​heft function.
The third trick: choose the→→×☆ lock cylinder to see the color, and com↔‌​pare the color to see the workmanship. Tδ∏he good quality lock ♠σ®cylinder adopts electropε♣± lating treatment, the surface is smooth and α₹the color is bright. Among them, the dark €♥≠→yellow color is copper core, which is relσ×atively strong and has good anti-theft perfor>λ&mance. The lock core is dim in color and zinc all♥≥$♠oy is gray and has bubbles. Th¶★≤•e anti-theft performance is general.
The fourth trick: The ant®↕i-theft performance of the key is poor when th∞≈e key is inserted into the loc​♣k cylinder. After the key is ®£half inserted, use 5 to 7 c↕♥♣omponent force to rotate clockwisφ≠₹e or counterclockwise and continuλ•"e to press the key into the lock port. The stuck"♦→ key indicates that the lock cλγylinder has anti-theft per→÷αformance. Poor, smoothly inserting tα →★he lock cylinder in a half-rotat ↕βγion state indicates that the≠Ω anti-theft effect is go•‍‌≥od.