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Inventories (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Inventories |  |
Refrigerants and cylinders | $ 144,337 | $ 152,840
Less: net realizable value adjustments | (7,330) | (7,463)
Total | $ 137,007 | $ 145,377

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