*Emprenie operation will be applied to the all of the wooden material.

*Emprenie operation is to impregnate different chemical material into wood by various methods. This makes the wooden material more stronger and prevent spoiling.

* All Plastic components are linear polyethlene, also the dye which used to colorize is suitable to the administrative food laws.

* Antistatic material should be added into polyethylene to remove the static electricity appearing during sliding action.