R & D and sales of car audio and video navigation systems, car hardware and software, car electronics, digital products, audio equipment, auto and motorcycle accessories, communication equipment, hardware and electrical appliances, lighting appliances, leather products, and automotive modification products. R & D and sales of car audio and video navigation systems, car hardware and software, car electronics, digital products, audio equipment, auto and motorcycle accessories, communication equipment, hardware and electrical appliances, lighting appliances, leather products, and automotive modification products.