50 long beam thousand layer 

a) Laminated padlock is made of multi-kayer high strength meltal steel sheets which surface use zinc plating process;the durable metal shackle is corrosion resistance.

b) With rewritable "DANGER"and "PROPERTY OF"warning signs.Can customize Chinese or other language.

c) Several types classified by lock bodies.

d) Suitable for special enviroment and condition.