Maria lee -

Maria lee

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cement
Specification: 32.5, 42.5,52.5, 42.5R, 52.5R etc
Detail: Our firm mainly do international business in building materials such as glass, cement, and clinker etc. We have many years?experience in exporting many kinds of specification cement including 42, 5R, 32, 5R, 52.5R etc, until n...

kojic acid
Specification: Chemical structure: CH²OH
Detail: KOJIC ACID 1£® Name£¬Composition and formula chemical name: 2-hydroxymethyl-5-hydroxide-¦Ã-pyronone 5-hydroxide-2-hydroxymethyl-1,4pyronone 4H-pyran-4-one5-hydroxy2-hydroxy methyl. American CHEMISTRY DIGEST(CA Registrtio...


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