Concrete CuringL&M Construction Chemicals: Construction and Building Chemicals, Grouts, Sealers, Sealants, Concrete Construction, Concrete Polishing, Water Repellents L&M provides product and knowledge solutions to concrete problems. L&M supplies its products to market through a nationwide and international network of independent distributors. With over 40 years in business, L&M now encompasses various packaging plants, numerous warehouses, and an international distribution system. History Here are just a few of the product lines L&M carries: High performance chemical floor hardeners and densi