⇒ Lock body is resistant impact, UV, corrosion, heat and

    low temperature.

⇒ The key hole is narrow, put an end to tools to open.

⇒ The lock core has large angle of precision formula,

    other keys can not open.

⇒ Medium carbon steel of the hook, high strength, shuangzhu

    system security.

⇒ High anti-theft performance.