Atunda space science and technology limited, beijing, is a combination of energy companies that design, develop, produce and sell integrated energy, supported by a series of associated auxiliary parts and dominated by solar photovoltaic products. The company's three-yang ritter solar energy has won a great deal of consumer approval with excellent performance and steady quality. The product has been awarded china's famous brand, the most investor-oriented brand, by the china center for chinese light and light quality assurance. After being mechanized, automated and modeled, the company operated for many years, making &ldquao; the san yingret brand was placed on the fly wing and joined the chinese brand. While providing high-quality products, tri-yurette solar water heaters always focus on providing quality services to consumers. At the national level, san yenret has established a number of provincial and municipal after-sale service centres, which provide the best service to consumers through day-to-day services such as door-to-door deliveries, free installation, regular maintenance, telephone calls and consultations. For distributors: market research, tailor-made shop design, product positioning, branding promotion, pre-staff training, mentoring to market development in the medium term, promotion, promotion, end-user visits, maintenance, etc. For consumers: the most humane and secure services, initial field observation, free design, timely installation, medium-term adaptation to client needs free of charge, demolition, regular telephone calls to meet client needs, and, at the end of the warranty period, only spare parts costs are charged for maintenance。