Rigid plastic containers span food, cosmetics, chemical, and industrial sectors. CIJ is the most common solution on high-speed lines; laser is preferred where permanent, compliant marks are required. For chemical and large-packaging shipments, the mark must stay legible through storage, transport, and use. One concrete fact: IBC marking under 49 CFR §178.703 must carry UN identification, design type code, performance level, manufacturing date, authorizing country, manufacturer information, stacking test load, and maximum permitted gross mass — in a defined sequence.