whatsapp:+86 13805212761 http://www.mit-ivy.com mit-ivy industry company DSD acid (4,4 diaminostilbene mono-2,2 bisulfonic acid) iwudayi obalulekile ophakathi nendawo, osetshenziswa ikakhulukazi ukwenza izikhanyisi ze-fluorescent, ngqo ophuzi oqandisiwe ongu-G, u-R ophuzi oqondile, owolintshi ongazweli ekukhanyeni kwelanga F3G kanye nezintuthwane...
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