Shandong Ruiyu Battery Co., Ltd. was established in 1980 and is one of the specialized companies in manufacturing automobile start lead-acid batteries. Along with further development, Shandong Ruiyu Battery Co., Ltd. has been transformed as a stock system company since 2001. For many years, we have adhered to the principle of "High quality, high performance, scientific management, quality first, meet clients' requirements, serve society, constant improvement, create famous brand" and develop ourselves by means of technological innovation. Now we have become a modernized enterprise in the field of battery manufacture in China. After more than 20 year's long time and painstaking efforts, Shandong Ruiyu Battery Co., Ltd. has accumulated rich experience from battery design, development to manufacture. Our batteries have surpassed other batteries in service life and performance because of technical innovation and creation. So we enjoy an advantageous position in the competition of the world market at present and even in the future. In recent years, Ruiyu has been quickening reform step by step and has established new companies like Lead Industry Co., Ltd. and Plastic-filling Co., Ltd. We also increase investment in automobile start series lead-acid batteries. A modernized enterprise system has been taken into shape. What's more, we have developed maintenance-free seal-style series and valve-controlled seal-style series lead-acid batteries. A complete battery manufacture system has been formed in our company.