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BT-302 Polycarboxylate superplasticizer 40% (Babban nau'in riƙewa ƙasa)
BT-302 wani sabon ƙarni ne mai saurin sakin jiki da kuma shaye shayen uwa wanda aka sanya shi daga TPEG ta hanyar samar da polymerization mai sassaucin ra'ayi, kuma an shigar da sabon rukuni mai ɗorewa cikin kira.