补充描述:
Beta Carotin (CAS 7235-40-7) is manufactured directly by Hangzhou Verychem Science And Technology Co., Ltd. in assay grades of 1%, 5%, 10% and 99%, though no samples are offered. It is certified to Ph. Int. standards and distributed to North America, Central/South America, Western Europe, Eastern Europe, Australasia, Asia and the Middle East.
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