Nihonkaisui Co., Ltd.

Adsorbents for water treatment

Nihonkaisui’s vision

Seawater industry pioneer that brings people and the ocean together through technology

Chemicals
Food Products

Area Onahama・Izumi
Industrial Parks-

Products & Services

Materials

Processing

Food, etc.
Resin / Rubber Processing

Related Fields

Energy / Environmental Recycling

Company Overview

As the leading salt company with the top share of the Japanese market, we have provided safe, reliable salt to our customers for many years. With the technical expertise and passion for manufacturing we have cultivated through harnessing the ocean’s bounty for salt-making as part of the Air Water Group, we aim to utilize the boundless resource of seawater to expand our business into the environmental, food, and agricultural sectors.

Primary Products / Services

Salt:Manufacture and sale of household salt, commercial-use salt, snow melting salt, and artificial seawater
Environment: Manufacture and sale of magnesium hydroxide, water treatment agents, soil treatment agents, and incineration ash treatment agents
Food & Agriculture: Manufacture and sale of seaweed, furikake, and ochazuke products
Electric Power: Power generation using renewable energy (biomass)
R&D: Creation of new businesses utilizing seawater resources

IP & Licenses, etc.

Intellectual Property
●Method for Regenerating Boron Adsorbent (Patent No. 4637737)
●Method and Processing Equipment for Treatment of Wastewater with High Concentrations of Calcium and Alkali (Patent No. 5808638)
●Treatment Device and Method for Wastewater Containing Heavy Metals (Patent No. 6012402)
●Method for Handling of Hazardous Substances (Patent No. 6008455)
●Numerous more
Certifications / Licenses
●ISO 9001, ISO 14001, ISO 45001, Halal certified (Ako & Sanuki factories), HACCP certified JFS-B standard (Ako, Sanuki, & Kumamoto factories), Fukushima Prefecture Family Education Support Company Certified Business
Awards / Commendations
●Kanto Region Invention Awards’ Invention Encouragement Award for “Radioactive Iodine Adsorbent Technology”

Company Strengths & Characteristics

● As the sole salt manufacturer with two production bases in Japan, we are capable of providing a swift and consistent supply of salt. (Ako & Sanuki Factories)
●Our facility for producing magnesium hydroxide, used in smoke and wastewater treating environment products, is the largest in eastern Japan. (Onahama Factory)
●As the production base for the long-established brand “Urashima Nori” seaweed, which boasts over 100 years of history, we continue to create a diverse range of products for household use, gift-giving, and commercial purposes. (Kumamoto Factory)
●Through joint development with the Air Water Group and industry- government-academia collaborations, we are striving to create new businesses.

Future Prospects & Areas of Interest

Utilizing our salt production technologies and seawater resources, we are working with our group companies to create new businesses across a range of fields including environmental protection, energy production, food, agriculture, and water-centric industries. To maximize our competitiveness in the seawater industry, we are strengthening our collaborations with the Air Water group in R&D, production, logistics, and sales. We are also actively pursuing alliances and M&A opportunities with related companies.

Seawater industry pioneer that brings people and the ocean together through technology