HFC-134a

Ozonosphere, as a shield to protect the existence and breeding of human being and other organisms, can absorb the harmful proportion of solar ultravioletradiation to protect human being and other organisms. Yet, since 1970s, naturalists have been warning that the ozonosphere has been greatly consumed, which severely threats human's living environment. From the 1960s to 1980s, taking the protection of ozonosphere as their own duty, "Lantian" employees were the earliest ones that had been engaged...