Manufacture of glass fibres

Title: Manufacture of fiberglass Includes the manufacture of: glass fibers for "insulation" in bulk, in blankets, in panels and similar; "textile" fiberglass in mats, rovings or rovings; glass wool. Does not include:  Manufacture of fiberglass fabrics (13962);  Manufacture of rock wool, slag and other minerals (23992);  Manufacture of individually insulated fiber optic cables (for data transmission) (27310);