whatsapp:+86 13805212761 http://www.mit-ivy.com mit-ivy ụlọ ọrụ DSD acid (4,4 diaminostilbene mono-2,2 bisulfonic acid) bụ ihe dị mkpa agba agba n'etiti, tumadi na-eji na-emepụta fluorescent brighteners, kpọmkwem. odo G kpọnwụrụ akpọnwụ, odo R kpọmkwem, oroma F3G na-eguzogide anwụ na ndanda ...
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