This is the Ocean Power Supply Co., Ltd.We are a specialized manufacturer of rechargeable lead acid batteries.And pleased to inform you that we can provide batteries of 2v,4v and 12v.Our products are of very good quality and our firm is always regarded by our customers as the most reliable one.We are willing to establish trade relationship with you company.Our customers included the Hongkong airport,China telecommunication,the Aisia expo center of Beijing etc.We have obtained the certification of CE and UL etc.So we believe that we can meet all your requirements.