IMDG Code states “The certification shall be signed and dated by the consignor.”
The text of the certification for which shipper signs is as below
“I hereby declare that the contents of this consignment are fully and accurately described above by the Proper Shipping Name, and are classified, packaged, marked and labelled/placarded, and are in all respects in proper condition for transport according to applicable international and national government regulations.”
Shipper is responsible to sign the DG declaration. This signature may be replaced by the name(s) (in capitals) if the DGD is presented to the carrier by means of EDP or EDI.
Further the person responsible for packing the container shall sign the packing certificate. Packing certificate is not required for tanks.