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.

COMPANY INTRODUCTION SEE MORE

COMPANY
INTRODUCTION

We would like to go out into the world as glocal compnay. We aim to be a company that is widely loved by people.
BUSINESS CONTENT SEE MORE

BUSINESS
CONTENT

We introduce Union's business in the production of petroleum products and chemical products.
EFFORTS UNION OIL SEE MORE

EFFORTS OF
UNION OIL

We introduce our efforts in quality, environment, health and safety.

INQUIRY

Please feel free to contact us.