■ Manufacturing, sales, and installation of equipment and materials for air pollution prevention and water quality pollution prevention ■ Sales and installation of pollution prevention equipment ■ Sales of cleaning equipment ■ Sales of pharmaceuticals, industrial chemicals, detergents, etc. ■ Sales of daily miscellaneous goods ■ Sales of sports equipment ■ Contracting for cleaning of buildings and structures ■ Painting construction business ■ Collection, transportation, and disposal of general waste ■ Collection, transportation, and disposal of industrial waste ■ Recycling and processing of glass products, ceramics, etc. ■ Paving construction business ■ Manufacturing, sales, and installation of glass crushers and crushing equipment ■ Import and export business of glass crushers and crushing equipment ■ Export business of glass recycling products (such as crystal sand) ■ All businesses incidental to the above items