Focussing on chlorine dioxide-clo2 Innovations! Hebei Richem Import&Export Trading Co., Ltd is specializing in manufacture, import and export of chemical product since 1990s'. Water treatment chemicals(chlorine dioxide), agrochemicals and intermediates, and food additives constitute our business. It is the professional staff, normative operation, top quality, reasonable and competitive prices, perfect after-sales service, credit-keeping that we had established stable long-standing trade relat...