The lock cylinder adopts a number of anti-th§×eft technologies and a variety↔φ∏→ of special-shaped anti-pulling bulle€ <εts to prevent technical opening. W∏α<≠ith the unique structure design o<≠f bullets and blades, it ha★≠λγs high safety performance of preventing ∞‍ technical opening. The lock container is eq₹♠♥×uipped with precision$₽δ number marble and sp↓πecial-shaped marble structures, whichλ€σ will be automatically locked when the numbeΩ≈βr marble and special-shaped marble must be pullσφed at the same time duri↑δ∞↕ng the technical opening, thus making the techniε"cal opening fail. Th↔α'e lock cylinder uses a variety of ↓σ♦¶special-shaped marble ×₹£s and multiple combinations, which can compile u >€ p to billions of key numbers, thus realizingα™ zero-opening of regions (one♥Ω£Ω in 16 million). The lock cylinder is add±¶ed with a side-to-side pressure-type side&φ‍‌ post locking pin device, which greatly impr©Ω₽‌oves the ability to prev♥€ent violent torsion.

Anti-theft standard
The security level of anti-theft locks i✔≤s divided into A, B and C level∏♣Ωs according to national ™☆< standards.
1. Class A lock cylinder, prevent techn✔₹ical opening ≥ 1 minute, anti-drilling ≥ 10₹™ minutes, anti-sawing α&≥↓≥ 5 minutes, anti-prying ≥ 10 minutes, anti-pu‌αlling ≥ 10 minutes, anti-impact ≥ 10 m‌ inutes.
2. Class B lock cylinder, preventing te$±chnical opening ≥ 5 minutes, anti-drillin✘γ≈‍g ≥ 15 minutes, anti-sawing ≥ 5 minutes, anti-prπו ying ≥ 15 minutes, anti-pulling ≥ 15 miγ×≤↔nutes, and anti-impact ≥ 15 minutes.
3. Class C lock cylinder, preven δting technical opening ≥ 10 minutes, anti-drill$δ☆ing ≥ 30 minutes, anti-sawing ≥  ™×←30 minutes, anti-prying ≥ 30 minutes, an ™ti-pulling ≥ 30 minutes, a←♥'←nd anti-impact ≥ 30 min♣≠∞utes.

Classification
Class A: The key is flat or crescent, with a row ★ ×™of concave keyway on one side or both sides or a •≤convex keyway on fou> r sides of the cross;>©≠ 
Class B: The key is flat or cresΩπ cent, with two rows of coλ♠ncave keyholes or cylindrical ₹↔multi-point concave keyholes on one or both si×∞des;
Class C: The key is flat, w πith two rows of conca←γve and S-shaped keywa"↔☆y on one or both sides, or doub≤≠le snake keyway inside and outside;©<‍♣

Purchase Standard
The safest lock cylinder has be ↑∑¶en upgraded to Class B and Class C. It is best  ↔Ωto choose Class C when purchas←₽ing.
The first move: I used to ™εβbuy a lock to judge the qual✔‌¶ity of the lock cylinder by the ↑×€♣number of key teeth. It m± ainly depends on the structure of the lock cylind¶✘××er. The blade side column struct∞βure is often much better than the © ✘≥traditional marbles struשcture. When picking a lock, it i€₽δs better to ask a professπ¥★•ional teacher for advice and then pick it accordi ↓ng to the situation.
The second move: pick the loc$‍k and weigh two, one than the weight and two €∏to look at the lock cylinder. The heavie↔±∑r the weight, the better the quality of the♥∏¥π lock cylinder, and the more beads in γ§‍the lock cylinder, the better the ★↑∞anti-theft function.
The third trick: choose the lock cylinder∞↓ ★ to see the color, and compare the color to se  e the workmanship. Thγ ≤≥e good quality lock cylinde© ₽r adopts electroplating treatment, the surfa<∏∏ce is smooth and the coπ lor is bright. Among them, <•πεthe dark yellow color is copper core, which is∏★©₩ relatively strong and ∏★&has good anti-theft performance. The lock core ☆₹£∞is dim in color and zinc alloy★≠ is gray and has bubbles. The anti-→πtheft performance is general.
The fourth trick: The anti-thef♦¥α∑t performance of the key is poor↓¥♥  when the key is insert↕φed into the lock cylinder. After ∏ ​✔the key is half inserted, use 5 to 7 componen§↕©★t force to rotate clockwise σ♣®or counterclockwise and con™∑tinue to press the key int±≈o the lock port. The >₩stuck key indicates that the l' ock cylinder has anti-theft performance₽<. Poor, smoothly inserting the lock cy≈™®linder in a half-rotation ÷≈state indicates that the anti-the≤&ft effect is good.