List of Manufacturers & Suppliers Based on HS Codes in Switzerland - Chapter 28

280920 : Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined. - Phosphoric acid and polyphosphoric acids

281122 : Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes Other inorganic acids and other inorganic oxygen compounds of non-metals. -- Silicon dioxide

281511 : Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash); peroxides of sodium or potassium. -- Solid

281810 : Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes Artificial corundum, whether or not chemically defined; aluminium oxide; aluminium hydroxide. - Artificial corundum, whether or not chemically defined

281820 : Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes Artificial corundum, whether or not chemically defined; aluminium oxide; aluminium hydroxide. - Aluminium oxide, other than artificial corundum

283311 : Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes Sulphates; alums; peroxosulphates (persulphates). -- Disodium sulphate

283329 : Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes Sulphates; alums; peroxosulphates (persulphates). -- Other

285390 : Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes Phosphides, whether or not chemically defined, excluding ferrophosphorus; other inorganic compounds (including distilled or conductivity water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than amalgams of precious metals. - Other