Section 6(1)(a) in The Liquefied Petroleum Gas (Regulation of Supply and Distribution) Order, 1993
(a)[unless authorised by a Government Oil Company or parallel marketer] [Inserted by Notification No. G.S.R. 6 (E), dated 6th January, 1994.] supply or sell filled or empty cylinders, gas cylinder valves and pressure regulators to any person other than a Government Oil Company or a parallel marketer;