1 Subject to sub-paragraph (3), equipment and devices specially designed to initiate explosions by electrical or non-electrical means, including— a firing sets; b detonators; c igniters; d boosters; e detonating cord. 2 Subject to sub-paragraph (3), components that have been specially designed for any thing mentioned in sub-paragraph (1). 3 Sub-paragraphs (1) and (2) do not apply to any thing that has been specially designed for a specific commercial use. 4 For the purpose of sub-paragraph (3), a “specific commercial use” means the actuation or operation by explosive means of other equipment or devices the function of which is not the creation of explosions, including— a car air-bag inflaters; b electric-surge arresters; c fire sprinkler actuators.