HA International offers the North American foundries the most comprehensive range of products supported in four market segments: Resins Systems for bonding sand; Resin Coated Sands (RCS) for the shell process; Refractory Coatings; and Chemex feeding systems.. Resin systems include: shell resins, ester cured phenolic coldbox and nobake resins, phenolic urethane coldbox and nobake resins, acid curing furan and phenolic Read more...