Cuprous oxide is red pigment powder, which is used as antifoulant for ship bottom paint to prevent the ship bottom from being barnacled. We developed cuprous oxide that was suitable for ship bottom paint (GG type) free from organotin compound. Since its release, this product has gained great support from many customers because it conforms to the recent Marine Pollution Prevention Law.

Sulfuric acid is an indispensable basic raw material in various industries for chemicals, electronic materials, steel, food processing, etc. At the Osaka Plant, sulfuric acid containing the lowest level of impurities is produced by the sulfur roasting method. It is the only plant in the Kinki area, that supplies sulfuric acid that can be used for food additives. A safe supply system has been established by the Osaka Plant plus two companies (*) investing in the Plant. For the transportation of products, an affiliated company of the Group, which has a sulfuric acid carrier vessel and tank lorries (for concentrated and diluted sulfuric acid), provides a perfect supply system.

* Onahama Smelting & Refining Co., Ltd. (Onahama-shi, Fukushima) and Hibi Kyodo Smelting Co., Ltd (Tamano-shi, Okayama)

Polymeric ferric sulfate solution
A polymeric ferric sulfate solution, which is used for water treatment, is produced. It provides superior effects of deodorization, dephosphorization and dehydration as well as the agglomeration effect of the conventional similar treatment agents. It is, therefore, widely used as a coagulant for sewerage, human waste and general industrial waste. This product line includes various brands to comply with every water quality.

Aluminum sulfate
Aluminum sulfate is produced using sulfuric acid for food additives as its raw material since it is mainly used for drinking water. This product is supplied to customers in a large area by taking advantage of the location. An affiliated company of the Group safely and properly delivers aluminum sulfate to customers using its tank lorry exclusively for this product.

Sapphire substrates are mainly used for blue and white light emitting elements based on gallium nitride. This product uses quality crystals and is treated with advanced surface polishing. A large number of types are available for meeting the needs of customers.