ISO 21912:2021 pdf download – Solid recovered fuels — Safe handling and storage of solid recovered fuels. 3.5 forward oblique stroke / special character used to separate data elements in a data string Note 1 to entry: It is character value 47 in ISO 646. 3.6 in-service product/part product/part for which the original manufacturing process, including application of the identification symbology, has been completed and which is no longer an asset of the manufacturer or portion of the enterprise which owns the manufacturing process 3.7 limited marking space space available on the product/part which is insufficient for a machine-readable symbol...