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