We are making the blood of industry.

We want to be a reliable company
that meets the diverse needs of our customers.

We are a glocal company from Iwakuni that is supporting the world.

Union Sekiyu Kogyo Co., Ltd. is
a naphthenic base oil manufacturer.

We manufacture various petroleum products and chemical products, mainly naphthenic base oils.

We act responsibly from raw material procurement to product shipment, and work to supply safe and secure products.

We will strive to respond to diverse needs and contribute even more to the development of industry and society.


Please feel free to contact us.