Sony Group of Japan claims that half of its semiconductor factories have concealed harmful substance emissions. Local time on the 8th, it was learned that Sony Semiconductor Manufacturing Company, a semiconductor manufacturer under Sony Group of Japan, announced on the same day that the company had released harmful chemicals outside the factory without reporting. According to reports, the company's camera image sensor factory located in Kiyoyo cho, Kumamoto Prefecture, which emitted hydrogen fluoride, a substance commonly used in semiconductor processing and cleaning.