What this class covers:

This class covers chemicals used in industries, laboratories, and agriculture. It includes raw materials for manufacturing products like plastics, adhesives, and detergents. You won't find finished consumer products here—just the ingredients used to make them. Items like fertilizers, fire-extinguishing compositions, and industrial gases belong in this category.

What this class covers:

This class covers raw and semi-finished metal products, including building materials like steel beams, nails, and pipes. It also includes common metal goods like safes, locks, and metal containers. Items must be primarily made of metal to fit in this category. Finished goods, such as furniture or jewelry, fall under other classes.

What this class covers:

This class covers rubber, plastics, and insulation materials used in industrial applications. It includes waterproofing sheets, foam padding, and electric cable insulation. These are typically raw or semi-processed materials. However, finished rubber products like tires belong in Class 12.

What this class covers:

This class includes construction materials that aren't made of metal, like bricks, glass, and lumber. It covers everything from cement to roofing shingles. Prefabricated non-metal buildings are also included. However, metal building materials belong in Class 6.

What this class covers:

This class includes services related to building, renovation, and maintenance. It covers contractors, plumbing, electrical work, and car repair services. These services involve physical labor to construct or fix something. However, real estate management belongs in Class 36.