Guagdong Yunshan Battery Factory , Guangdong Yunshan Automobile Factory , is a state-owned military enterprise belonging to the Equipment Department of Guangzhou Military Command .It covers an area of 200, 000 squaremeters and is located in Guangzhou city , Guangdong Province .It was established in 1958 and has a history of tens of years' experiences in producing storage battery .The factory's quality guideline is :Regarding quality as eternal motif , integrating national protection with science and technology of military industry , persisting in following the approach with science and technology in the lead , optimizing overall internal management , providing all kinds of best service , occupying the market with famous brands and winning the customers' acknowledgement with quality and sincerity .The products from 7431 factory are distributed national wide , not only used to equip the military vehicles but also exported to South ease Asia , Africa , Middle East and Europe , and have hence been widely acclaimed in the market .Modern Enterprise Systems is widely used in all courses of production , and the battery production follows the National Standard GB5008-91 and the Military Standard GJB516A-95, which passed ISO9001:2000 Quality Authentication in 2001 .