(1) No person shall manufacture, import, distribute, sell, hire, lease, store or exhibit for sale any such goods, article, process, system or service under sub-section (1) of section 16—
         (a) without a Standard Mark, except under a valid licence; or
         (b) notwithstanding that he has been granted a license, apply a Standard Mark, unless such goods, article, process, system or service conforms to the relevant standard or prescribed essential requirements.
     (2) No person shall make a public claim, through advertisements, sales promotion leaflets, price lists or the like, that his goods, article, process, system or service conforms to an Indian standard or make such a declaration on the goods or article, without having a valid certificate of conformity or licence from the Bureau or any other authority approved by the Central Government under sub-section (2) of section 16.
     (3) No person shall use or apply or purport to use or apply in any manner, in the manufacture, distribution, sale, hire, lease or exhibit or offer for sale of any goods, article, process, system or service, or in the title of any patent or in any trade mark or design, a Standard Mark or any colourable imitation thereof, except under a valid licence from the Bureau.