What are the 4 categories of trademark registration?

the 4th category of trademark registration is material processing, printing and sewage treatment. The fortieth category mainly includes the services of mechanical or chemical treatment or processing of organic substances, inorganic substances or articles that are not included in other categories. According to the requirements of classification, trademarks are regarded as service marks only if they are processed or processed for others. According to the same requirement of classification, a trademark is regarded as a commodity symbol in all cases when someone trades processed or processed substances or articles.

This category includes:

Services for processing articles or substances, including processing services for changing their main characteristics (such as dyeing clothes); According to the normal classification, maintenance services should be included in the thirty-seventh category, but if such changes are made, they can be included in the fortieth category (such as chrome plating of automobile impact protection devices);

material handling services in the process of material production or building construction, such as cutting, shaping, polishing or metal plating.

in particular, this category does not include: repair services (category 37).