C
CHEMISTRY; METALLURGY
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C03
GLASS; MINERAL OR SLAG WOOL
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C03B
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
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C03B2207/00
Glass deposition burners
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C03B2207/20
Specific substances in specified ports, e.g. all gas flows specified
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C03B2207/24
Multiple flame type, e.g. double-concentric flame
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