… for use as filtering agents. Products of this type are also generally obtained by appropriate heat … transparent flakes having curved surfaces. The two types of products cited at (1) and (2) above are of very low …
… Carrara porcelain) is a special, fine-grained, yellowish type containing more feldspar, and often resembling Paros … alumina) may also fall in sub-Chapter II if not of a type designed for use as refractory goods (see Explanatory …
