91久久精品一区二区三_亚洲伦理在线精品_日韩美女啊v在线免费观看_欧美sm极限捆绑bd_欧美在线free_国产91丝袜在线播放_亚洲gay无套男同_国产欧美久久久精品影院_欧美色电影在线_日日摸夜夜添夜夜添国产精品_欧美四级电影网_亚洲宅男天堂在线观看无病毒_色嗨嗨av一区二区三区_久久夜色精品国产噜噜av_综合分类小说区另类春色亚洲小说欧美_亚洲人被黑人高潮完整版

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	Hydroquinone Series	more

	Hydroquinone(HQ)
	Para-Benzoquinone(PBQ)
	toluhydroquinone(THQ)
	Manganese carbonate


	Fine Chemicals	more

	2-tert-butylhydroquinone(TBHQ)
	2,5-Di-tert-butylhydroquinone(DTBHQ)

Hydroquinone Series

Product Name: Para-Benzoquinone(PBQ)

Molecular Formual: 1,4-C₆H₄O₂

Molecular weight: 108.1 (According to the international atomic weight of 1987)

Specification: Content: ≥99%

Usage: It can be used widely in medicine, herbicide, chemicals and dyes.

Packing: 25kg (N.W.) cardboard drum lined with double plastic bags.

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91久久精品一区二区三_亚洲伦理在线精品_日韩美女啊v在线免费观看_欧美sm极限捆绑bd_欧美在线free_国产91丝袜在线播放_亚洲gay无套男同_国产欧美久久久精品影院_欧美色电影在线_日日摸夜夜添夜夜添国产精品_欧美四级电影网_亚洲宅男天堂在线观看无病毒_色嗨嗨av一区二区三区_久久夜色精品国产噜噜av_综合分类小说区另类春色亚洲小说欧美_亚洲人被黑人高潮完整版

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