A leading manufacturer of research chemicals, metals and materials including high purity inorganics, organics and organometallics, precious compounds and catalysts, rare earth compounds and metals, labware and more.
URL: https://www.alfa.com/en/ in English [Translate]
NIST (National Institute of Standards and Technology) supplies industry, academia, government, and other users with over 1300 reference materials of the highest quality and metrological value.
URL: http://www.nist.gov/srm in English [Translate]
Zhejiang Taizhou TU-POLY Co., Ltd. as a member of China Research Institute of Daily Chemical Industry is a specializing in producing surfactants series, such as APG series, AEC series, TIPA series, MPEG series.
URL: http://www.tu-poly.com [Translate]