⇒ 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.

 ⇒ The whole is made of stainless steel, which can increase

     the service life.

 ⇒ High anti-theft performance.