Ofooka Base Anion (WBA) utomonis ali polima wopangidwa ndi polymerizing styrene kapena acrylic acid ndi divinylbenzene ndi chlorination,chisangalalo. Kampani ya Dongli amatha kupereka gel osakaniza ndi macroporous mitundu WBA ma resin okhala ndi maulalo osiyanasiyana. WBA yathu imapezeka m'mitundu yambiri kuphatikiza mitundu ya Cl, kukula kwa yunifolomu komanso kalasi yazakudya.
GA313, MA301, MA301G, MA313
Utomoni wosavuta wa anion: mtundu uwu wa utomoni uli ndi magulu ofooka, monga gulu la amino (lomwe limadziwikanso kuti gulu la amino) - NH2, gulu lachiwiri la amino (gulu lachiwiri la amino) - NHR, kapena gulu la amino apamwamba (tertiary amino group - NR2. Amatha kusiyanitsa Oo - m'madzi ndipo ndizofooka. Nthawi zambiri, utomoniwu umatsitsa mamolekyu ena onse a asidi munjira. Ikhoza kugwira ntchito mopanda mbali kapena acidic (monga pH 1-9). Itha kupangidwanso ndi Na2CO3 ndi NH4OH.