1.manufacter for 16 years 2.service:OEM Agent 3.certificate :CE/ ISO9001,ISO14001,ISO/TS16949/ SASO.SONCAP 4.long service common dry charged battery:1. maintenance needed, dilute sulphuric acid needed.2. lead-antimony alloy grids3. polyvinyl chloride (PVC)separator4. holes in the cover are for electrolyte and replenish pure water be filled5. with handleCertification:ISO9001,ISO14001,ISO/TS16949, ...