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| SECTION C– CHEMISTRY; METALLURGY |
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| C 03 | GLASS; MINERAL OR SLAG WOOL |
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| C 03 B | MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES |
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| C 03 C | CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS |
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