DONGNAM Petroleum Ind. Co., Ltd. is one of the major insulating oil manufacturers in South Korea.
Being established in 1973, we have years of accumulated technical know-hows, ensuring the quality and reliability of our insulating oil. We have patent registered environmentally friendly Natural Ester (vegetable oil based) “BIOTRAN-35” which is less flammable (UL Listed and FM Approved) and has longer lifespan.
Brands: -BIOTRAN-35 (Natural Ester): K-Class environmentally friendly insulating oil (UL listed and FM Approved)
-ESTRAN: Mineral based electrical insulating oil, being used in super high voltage transformers
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