The system adopts advanced solvent-freeepoxy resin patented in-service oil tank leak-proof inner tank transformationtechnology. It has the advantages of high mechanical strength, goodcompactness, high ductility, excellent corrosion resistance and electricalcorrosion resistance. Which greatly improves the safety and efficiency ofoperation for low VOC, resulting faster construction, reliability and safety.The inner wall can withstand the corrosion requirements of all oil products(methanol gasoline, etc.). The system can adopt different penetration modes (3Dfiber fabrics or aluminum foil) to meet the requirement of long-term pressureretention, and can meet the requirement of self-structure through structuraldesign.