Alltronics was originally founded in 1978 and sells electronic components and equipment to hobbyists, universities, dealers and companies. Please call us on 408 778 3868 or email sales@alltronics.com if you have questions on any our products, shipping or volume discounts. Also, we do not offer CA resale exemptions or refunds on our eBay store, please go to Alltronics.com as this is more suited to larger buys and P.O's. Please note that we do sell older surplus electronics and these are NOT Lead free/RoHS (unless specifically marked) and so we carry a California Proposition 65 WARNING, where products sold on this site can expose you to chemicals, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, please visit www.P65Warnings.ca.gov.