We, Roy Tech Co., Ltd is a Hong Kong battery manufacturer. With our own facility, we manufacture high quality Li-ion battery pack for all kind of notebook computers such as Sony, IBM, Fujitsu, Acer, Hitachi, Toshiba, Compaq, Dell & etc. We even provide additional high capacity battery pack (option) *. We will provide maximum*1 year warranty for our battery. Roy Tech also provide different Service plan and flexible trading arrangement for the costomer. We garentee our products are one of the most reliable and best qulity in the market. You are more than welcome to visit our show room for enquiry. Wholesales, retailor & exporter inquiry are welcome. * compare to original battery pack.