2850 Hydrocarbons, nitrides, azides, silicides, and borides, whether or not they have chemical definitions, except for carbides that can be classified under heading 28.49: HS code chinese tariffs

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2850001 ---Nitrides: ---Nitrides:

28500090 ---Hydrocarbons, azides, silicides, and borides, whether or not chemically defined, except for carbides classified under heading 28.49 ---Hydrocarbons, azides, silicides, and borides, whether or not chemically defined, except for carbides classified under heading 28.49