May 1, 2025:

Onomichi branch office has changed address.

November 11, 2024:

Shimonoseki branch office has changed address.

December 4, 2023:

Misaki branch office has changed address.

December 25, 2020:

Part of the top page renewed.

May 19, 2017:

Information on "Kuroshio" has been added to "Cascade refrigeration system."