Tianjin feng sheng da battery co., LTD is engaged in lithium thionyl chloride battery and lithium manganese dioxide battery two big series, widely used in oil exploration, drilling equipment, wireless sensing instrument, electronics, Marine, military equipment, such as scientific research department of industrial equipment and civil table series, has been involved in its area of emergency search equipment, emergency locator instructions, remote sensing, radio beacon, electronic memory support devices, intelligent pressure gauge. Smart IC card gas meter, electricity meter, water meter, and the type of electronic equipment. Research and development center of new power supply can be specially developed for the customers special specifications, special requirements of high-performance lithium batteries, lithium batteries, and is responsible for the battery technology consulting and contracting all lithium battery technology transfer