Established in 2004, Shenzhen Sin Ko Technology Co., Ltd. is a professional manufacturer of laptop batteries and adapters. Our company covers 3,000 square meters and is located in Guangzhou, Guangdong, China. Through years of development, we have become a large joint venture integrating production, design, development and sale. Our main products are laptop batteries and adapters. We supply a wide range of laptop batteries and adapters. Our products are suitable for HP, Dell, Apple, IBM, ...