diving equipment, namely, diving helmets regulators, head protectors, masks [, mask bags, cold water neck dams, deck breathing gas controller, and spare parts for same ]

T-shirts, sweatshirts [ and wet suits ]

manufacture of diving equipment, namely, diving helmets, regulators, head protectors, masks, mask bags, [ cold water neck dams, wetsuits, ] deck breathing gas controller [, and spare parts for same, to order and/or specification of others ]