8421.39 HS Code
Other machinery and equipment for filtering or purifying gases
Other machinery and equipment for filtering or purifying gases
Boilers, machines, mechanical devices and tools, nuclear reactors, their parts and accessories
Centrifuges (including centrifugal dryers) and machinery and equipment for filtering or purifying liquids or gases
Other machinery and equipment for filtering or purifying gases
Other machines and devices for filtering or purifying gases; diameter of stainless steel body, perforated inlet and outlet pipes <= 1.3 cm
8421.39.25Other machinery and equipment for filtering or purifying air
8421.39.35Machinery and apparatus for filtering or purifying other gases by catalytic process
8421.39.85Other machinery and equipment for filtering or purifying gases by other processes
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