1. Sources
  2. OECD International Trade
  3. International Trade By Commodity Statistics (SITC Rev. 3)
  4. 7: Machinery and transport equipment
  5. 74: Other industrial machinery and parts
  6. 747: Appliances for pipes, boiler shells, tanks, vats, etc.
  7. 7473: Check valves

7473: Check valves

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