Production and sale of insulating and building materials for use in the areas of land and engineering construction, e.g. asphalt waterproofing of roof systems and underground structures, waterproofing of bridges, asphalt grouts and joint tapes for road maintenance, foils, polyurethane adhesives for bonding thermal insulation, asphalt strips and foils, polyurethane coatings for processing complex details, penetrating coatings, asphalt sealants, heat-waterproofing complete parts, tools and devices for laying asphalt strips and adhesives, roof system accessories - drains, ventilation chimneys, moldings, terrace paving, protective layers, asphalt transition wedges, green roof accessories, leveling materials.