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Lithopone or sulphide of zinc white has been in general use for twenty years or more in many industries where a white pigment of considerable body or hiding power is required that is not subject to change like lead carbonate and has not the brittle character of zinc oxide, besides being sold at a lower figure than either of these. Nevertheless it is still comparatively new to the general painting trade. Because of our tariff protection its manufacture in this country has made great progress. Yet in spite of this and the duty imposed on it, the imports are still in excess of the quantity manufactured here. A short history of its origin will no doubt prove of interest to our readers.
In terms of manufacturers, there are many companies that produce calcium carbonate and titanium dioxide. Some of the top manufacturers of calcium carbonate include Omya, Imerys, and Minerals Technologies. These companies have large mining operations and production facilities in regions where calcium carbonate is abundant.
calcium carbonate vs titanium dioxide manufacturers
