PAC-LV, PAC-Hv, PAC R, Roj Drilling Material Polyanionic cellulose (PAC) feem ntau categorized rau ntau qib raws li nws qhov hnyav molecular, qib ntawm kev hloov, thiab lwm yam khoom. Ntawm no yog ib qho kev tawg ntawm qee hom PAC siv hauv kev lag luam roj drilling: PAC-LV (Low ...
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