div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: HEF-Ecoverfilad-filtercomupload_filesEn-documentHEF-Epdf · Raw water dyes wastewater recovery Chemical engineering Cooling water circulation system pre-protection device src=https:reader036fdocumentsfrreader036viewer20220626055fd78a1a8a2a0561556fd29bhtml5thumbnails1jpg 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: HEF-Ecoverfilad-filtercomupload_filesEn-documentHEF-Epdf · Raw water dyes wastewater recovery Chemical engineering Cooling water circulation system pre-protection device src=https:reader036fdocumentsfrreader036viewer20220626055fd78a1a8a2a0561556fd29bhtml5thumbnails2jpg 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: HEF-Ecoverfilad-filtercomupload_filesEn-documentHEF-Epdf · Raw water dyes wastewater recovery Chemical engineering Cooling water circulation system pre-protection device src=https:reader036fdocumentsfrreader036viewer20220626055fd78a1a8a2a0561556fd29bhtml5thumbnails3jpg 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: HEF-Ecoverfilad-filtercomupload_filesEn-documentHEF-Epdf · Raw water dyes wastewater recovery Chemical engineering Cooling water circulation system pre-protection device src=https:reader036fdocumentsfrreader036viewer20220626055fd78a1a8a2a0561556fd29bhtml5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdiv