div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb 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 src=https:reader035fdocumentsusreader035viewer20220816206102538058af507c15252fd3html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb 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 src=https:reader035fdocumentsusreader035viewer20220816206102538058af507c15252fd3html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb 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 src=https:reader035fdocumentsusreader035viewer20220816206102538058af507c15252fd3html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: niohpchinacdccnniohpchinacdccnzyysjkzywsbzml201210P · 2014 9 16 · ICS 13100 c52 GBZ GBZT 1924—2007 Determination of dust in the air of workplace— Part 4: Content src=https:reader035fdocumentsusreader035viewer20220816206102538058af507c15252fd3html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: niohpchinacdccnniohpchinacdccnzyysjkzywsbzml201210P · 2014 9 16 · ICS 13100 c52 GBZ GBZT 1924—2007 Determination of dust in the air of workplace— Part 4: Content...