Greenstone Holdings, Inc. is the exclusive US agent for Permeate™ HS-100, a corrosion protection sealer developed and manufactured by D&D Corporation in Japan.

Greenstone Holdings, Inc. is the exclusive US agent for Permeate™ HS-100, a corrosion protection sealer developed and manufactured by D&D Corporation in Japan. This product, an inorganic silicate sealer, is a special chemical designed to enhance corrosion-resistant coatings on metal surfaces. With its high fluidity, the coating reportedly penetrates through micropores on metal coating created during the coating process and protects it from exposure to water, acid, salt, and other harmful chemicals. The coating is designed to help protect infrastructure assets such as bridges, highway supports, large gas and fuel tanks, aircraft, and ships, where it is critical to preserve long-term structural integrity.

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