What about the kindle e-book bought by Riya?

Log in to the Riya account directly. The kindle e-book bought by Riya is pushed to the kindle directly by logging in to Riya account, but logging in to Riya now is more troublesome and requires a ladder. Riya is a professional manufacturing company engaged in the research and development of LED display screens and high-power LED lamps. At present, there are two wholly-owned companies and one joint venture company in China, whose products involve LED display screens and LED photoelectric applications. As a pioneer in the research and development of LED products in the industry, Riya has been committed to improving the quality of LED products and fully applying the performance of LED products. Dozens of product patents and honorary certificates are not only the highest recognition from all walks of life, but also the highest awards of the Japanese. At the same time, the Japanese also repay the society by pursuing Excellence and sincere service.