According to what ratio solar container is configured

The DC/AC ratio, also known as the inverter loading ratio (ILR), refers to the ratio between the total DC capacity of the solar panels and the AC power rating of the inverter. [pdf]

Iso standard for solar containers

The standard used to identify intermodal (shipping) containers is ISO 6346:1995. This standardized identification system is used to give each container a unique marking. The code can be further broken up into three parts an ISO 6346 (BIC) code, a size and type code, and additional optional markings. [pdf]