… of wood pulp, whether or not concentrated, desugared or chemically treated, including lignin sulphonates, but …
Explanatory notes
… of wood pulp, whether or not concentrated, desugared or chemically treated, including lignin sulphonates, but … fracture (in this case, it is sometimes known as sulphite pitch or cellulose pitch), or of a dry powder. … desugared or chemically treated (including the frothy mass which forms on the surface of these lyes in the …