Aldrich belongs to the Sigma-Aldrich family of companies, the largest provider of chemicals to scientists and engineers worldwide. With production facilities in five countries, products available for prompt shipment include: micro/nanoelectronics materials, fuel cell/battery materials, display/optoelectronics materials, biocompatible/biogegradable materials and nanomaterials. Now available: the Aldrich Materials Science Catalog, 2004-2005 edition.