How do companies get supplies? -

I am starting a kitchen appliance company, and was wondering how do I get the materials? I think that big companies, can make and buy there own materials... but I don t have much money because I am just starting out.If anyone can direct me to a metal company, that would be great.PS: If it helps, I need copper, titanium, aluminum, steel.Possibly Gold or Silver

The best source of wholesale and raw materials is trade magazines for your industry. Also contact trade organizations and unions for information.