div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader043fdocumentsinreader043viewer20220226065b81612a7f8b9ae87c8c2eabhtml5page1jpg target=_blank img data-url=document-and-fluorine-while-they-have-many-valuable-uses-ozone-in-the-upperhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: · and fluorine While they have many valuable uses ozone in the upper atmosphere In 1991 two replacement compounds for Freons went into production: HFC-134a loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader043fdocumentsinreader043viewer20220226065b81612a7f8b9ae87c8c2eabhtml5thumbnails1jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imagea href=https:reader043fdocumentsinreader043viewer20220226065b81612a7f8b9ae87c8c2eabhtml5page2jpg target=_blank img data-url=document-and-fluorine-while-they-have-many-valuable-uses-ozone-in-the-upperhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: · and fluorine While they have many valuable uses ozone in the upper atmosphere In 1991 two replacement compounds for Freons went into production: HFC-134a loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader043fdocumentsinreader043viewer20220226065b81612a7f8b9ae87c8c2eabhtml5thumbnails2jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imagea href=https:reader043fdocumentsinreader043viewer20220226065b81612a7f8b9ae87c8c2eabhtml5page3jpg target=_blank img data-url=document-and-fluorine-while-they-have-many-valuable-uses-ozone-in-the-upperhtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: · and fluorine While they have many valuable uses ozone in the upper atmosphere In 1991 two replacement...