y the investigation of toxic factor in 3257 foreign factories in Baoan district of Shenzhen,the situation of toxic factor in working rooms was analysised.The analysis suggested that many sorts of toxic factor in working rooms of foreign factores,most of them in electronic,ironmongery,clothes making,leather making,painting et al,were high toxic,high concentrated(high tensional) and allaround distributed;New toxic factor was used;Large amount of workers were influences by toxic factor.All these problems and...