All electrical systems installed in a dry or wet room, especially demanding situations in the industrial environment and fight against electromagnetic interference. Suitable for fixed installations and the occasions of continuous reciprocating and motion.sets of industrial equipment under medium mechanical stress ,installation for the complete sets of equipment, machine tools, conveyor systems, assembly lines, production lines.suitable for high requirements of industrial equipment which against chemicals, abrasion and oil resistant . Can also be used as hand-held electrical equipment. (but does not touch the hot parts or thermal radiation), such as: welding machines, heating equipment, drilling and so on.