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OECD International Trade
International Trade By Commodity Statistics (SITC Rev. 3)
7: Machinery and transport equipment
74: Other industrial machinery and parts
743: Pumps (excluding liquid), gas compressors & fans; centr.
7439: Parts of the machines, appar. of headings 7435, 7436
7439: Parts of the machines, appar. of headings 7435, 7436
74391: Parts of centrifuges (incl. centrifugal dryers)
74395: Parts of filtering or purifying machinery & appar.
7439: Parts of the machines, appar. of headings 7435, 7436
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