Our factory is one of Chinese biggest manufacturers for rechargeable batteries and solar products with CE and ISO9001 approvals. Gurantee: one year mobile phone battery : Nokia,Ericsson,Sony,SonyErisson,Motorola,Siemens,Panasonic, samsung, LG, Alcatel, Mitsubishi, Phillips,etc.One of Chinese biggest   Please send mail to me for more detail. I will do my best to cooperate with you to catch your market by our best price,quality and service