div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentniohp-2014-9-16-ics-13100-c52-gbz-gbzt-1924a2007-determination-of-dusthtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: niohpchinacdccnniohpchinacdccnzyysjkzywsbzml201210P · 2014 9 16 · ICS 13100 c52 GBZ GBZT 1924—2007 Determination of dust in the air of workplace— Part 4: Content loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader035fdocumentsnetreader035viewer20220816206102538058af507c15252fd3html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documentniohp-2014-9-16-ics-13100-c52-gbz-gbzt-1924a2007-determination-of-dusthtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: niohpchinacdccnniohpchinacdccnzyysjkzywsbzml201210P · 2014 9 16 · ICS 13100 c52 GBZ GBZT 1924—2007 Determination of dust in the air of workplace— Part 4: Content loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader035fdocumentsnetreader035viewer20220816206102538058af507c15252fd3html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documentniohp-2014-9-16-ics-13100-c52-gbz-gbzt-1924a2007-determination-of-dusthtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: niohpchinacdccnniohpchinacdccnzyysjkzywsbzml201210P · 2014 9 16 · ICS 13100 c52 GBZ GBZT 1924—2007 Determination of dust in the air of workplace— Part 4: Content loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader035fdocumentsnetreader035viewer20220816206102538058af507c15252fd3html5thumbnails3jpg width=140...