Green Automotive Co. is buying Blackhawk Manufacturing Inc. for an undisclosed amount.

Blackhawk, headquartered in Bloomington, Calif., and Tijuana, Mexico, manufactures specialty custom products, including fiberglass, urethane and vacuum-formed parts.

The target had been supplying Green Automotive's Newport Coachworks business, and the buyer feels the acquisition secures its supply chain.

Riverside, Calif.-based Green Automotive provides vehicle technology development, engineering and manufacturing services, focusing on zero or low-emission vehicles. In February 2013 the company agreed to buy Going Green Ltd., a U.K.-based electric vehicle distributor.