As the main means of water transportation, ships bear the heavy responsibility of carrying all kinds of bulk goods and passengers. Ships work for a long time and are immersed in seawater for a long time. The working environment is complex and the quality of lubricating oil is extremely demanding. Marine cylinder oil is mainly used to protect the main engine and generator of oil tanker! China Petrochemical Marine Cylinder Oil 5025 is a marine cylinder oil of China Petrochemical Great Wall Lubricating Oil Company.