We, SHENZHEN GUANZHEN SCIENCE AND TECHNOLOGY CO.,LTD, is a leading manufacturer of VRLA(Valve Regulated Lead Acid) Battery. Shenzhen Guanzhen Science And Technology Co.,ltd is a exporting our quality merchandise to Europe, North America, Middle east and southeast Asia with a good reputation supporting by the certificate of ISO 9001, UL, CE.We have got our own Research and Development team . We produce plates for our own use and sometimes selling to other manufacturers, which makes our PRICE quite COMPETITIVE. Our TPB VRLA battery consist of three series:FP series, capacity from 1.2AH to 30AH ,the design life standby is 3-5 years.LFP series, capacity from 33AH to 200AH , the design life standby is 5-7 years.CFP series, capacity from 100AH to 3000AH ,the design life standby is over 15 years. Please visit our website for more details and a look at our production line technology, or contact me directly with any inquiries.