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Guangzhou Topwork Chemical Co.,Ltd. specialize in manufacturing corticosteroid and relative intermediate. We also provide contract reseach & custom manufacture services. Our strong API are: Cyclosporine,Fluticasone Propionate,Clascoterone,Aminopentamid Sulfate,Pergolide mesylate,Fluocinolone Acetonide,Chlorambucil,Romifidine Hydrochloride,Demecarium Bromide, Desonide, Flunisolide,Desoximetasone,Diflorasone,Finerenone,Tacrolimus,Rapamycin,Meloxicam, Diflucortolone valerate, Difluprednate, Fludrocortisone acetate, Flumethasone,Flumethasone acetate, Fluorometholone, Fluorometholone acetate, Isoflupredone acetate, SelectFluor, Fludarabine Phosphate, 16a-hydroxy prednisolone, Loteprednol etabonate,Dipivefrin Hydrochloride, Olopatadine HCL,Methyprednisolone aceponate, Prednicarbate,Romifidine Hydrochloride, Milbemycin oxime,Palonosetron HCL,Trilostane,Mupirocin,Timolol Maleate,Cidofovir,Fulvestrant,Nestoron,Finerenone,4,4,5,5,5-Pentafluoro-1-pentanethiol. And Tannic Acid(Pharmaceutical/Tech/Dyes/Food Grade),Gallic acid(3,4,5-Trihydroxybenzoic acid),Pyrogallol(1,2,3-Benzenetriol),Ethyl gallate, Progyl Gallate, n-Octyl gallate,3,4,5-Trimethoxybenzaldehyde,Methyl 3,4,5-trimethoxybenzoate,2,3,4-Trimethoxybenzaldehyde and so on.