Chemicals for use in the construction, tunneling and mining industry; unprocessed artificial resins; unprocessed plastics; adhesives used in the construction, tunneling and mining industry; Chemical compounds for sealing concrete; chemicals and chemical additives for use as concrete repair materials; polyurethanes; chemical products for use as sealants, namely, synthetic resins that are used to repair and fill holes and cracks, adhere to surrounding materials and seal surfaces for use in hars...