How long must refrigerant sellers keep invoices showing the buyer, the date and the quantity?

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  1. Three years
  2. One year
  3. Ten years

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References

  1. 40 CFR 82.154 Prohibitions (Cornell LII) www.law.cornell.edu/cfr/text/40/82.154 Checked 2026-10-10.
  2. 40 CFR 82.154 Prohibitions (Cornell LII) www.law.cornell.edu/cfr/text/40/82.154 Checked 2026-10-10.

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