42 Electrical and mechanical design engineering; prototype development, namely, product development for others; systems integration and testing, namely, computer system integration and product testing of computer systems; printed circuit board (PCB) testing for others; complete product development; systems integration, namely, integration of computer systems and networks; independent wireless product testing; custom circuit board design for personal computers, digital signal processors, video capture devices and wireless devices; verification and manufacturing testing, namely, development and establishment of testing specifications and procedures for the computer electronics industry; functional and environmental testing, namely, evaluating and testing the environmental qualities and impact of consumer products for others; regulatory testing of wireless and embedded products, namely, product safety testing of wireless and embedded products for the telecommunications and computer industries according to state and governmental regulations