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[ Manufacturer ]Main business are Methane tester, Oxygen densimeter
[ Manufacturer Trader ]Main business are Sulfuric acid, Nitric acid, Anhydrous methane acid, Potassium iodide, Acetone.
[ Manufacturer ]Main business are Oxygen, Nitrogen
[ Trader ]Main business are Chemicals
[ Manufacturer ]Main business are Multi-film gas sampling bags, PEP gas sampling bags, Mixed standard gases, Analytical laboratory consumables.
[ Manufacturer ]Main business are Electrical heating element, Electric appliances and electric equipment
[ Manufacturer ]Main business are Coal mine safety instrument and equipment