Improve Intl Co.,ltd is a professional manufacturer specializing in researching, developing, manufacture and selling batteries in Shenzhen ,china. It was set up in 2005.our main products including alkaline battery, NIMH battery/pack, NI-CD battery/pack ,Li-polymer battery. Lithium battery. button cell battery etc. these products are widely used in the industry of telecommunication, digital products, portable computers, electronic products, lightening devices, oys, GPS. medical Instrument, ...