1) This plastic seal is made of ABS material, and after infused into shape one time. 2) Using laser light, hot-pressure technical to painting logo, seal number etc. 3) Like a regular key, and the lock body is molding into shape by anti-pressed plastic. 4) The lock perch is of steel plated with chrome 5) Tensile strength>800kgs 6) Use coverage: all-style containers, container trucks, oil trucks, banking case, truck, train, airline, logistics, warehouse etc. 7) Standard colors: red / yellow / green / blue / white