Johnson Matthey is a chemical and precious metals producer based in London, England. While the firm traces its origins to 1817, it is now a large global corporation with divisions focused on emission controls for vehicles, chemical processing for pharmaceuticals, process technologies, metal recycling and fabrication, battery/fuel cell technologies, and more. While diversified, Johnson Matthey still produces silver and platinum bars in wide range of sizes, which are highly desired by investors because of the firm's history and reputation for nearly 200 years.