An area consisting of a and b Smoke from welding and kao dump wont Make plenty of collectors. Make each evolve irritating employees in systems in the area.
Areas A and B Fumes from welding and nine interchanges inconvenience. Cause cumulative volume Cause irritation in the absence of employees in the area.
The area consists of a and B The smoke from the welding and Macau inconvenient, accumulated mass transfer Make it evolve in resent detection system of employees in the area.