49 CFR § 178.33b-9
Marking
November 18, 2020
(a) Each container must be clearly and permanently marked to show:
(1) DOT-2S.
(2) Name or symbol of person making the mark specified in paragraph (a)(1) of this section. Symbol, if used, must be registered with the Associate Administrator.
(b) [Reserved]
[74 FR 2268, Jan. 14, 2009]