Technical rule [CURRENT]
TWENTY-SEVENTH EDITION, AUGUST 2020; API MONOGRAM PROGRAM EFFECTIVE DATE: FEBRUARY 1, 2021; ADDENDUM 1, MAY 2023; ADDENDUM 2, JULY 2025 (MONOGRAM PROGRAM EFFECTIVE DATE: FEBRUARY 1, 2026)
TWENTY-SEVENTH EDITION, AUGUST 2020; API MONOGRAM PROGRAM EFFECTIVE DATE: FEBRUARY 1, 2021; ADDENDUM 1, MAY 2023; ADDENDUM 2, JULY 2025 (MONOGRAM PROGRAM EFFECTIVE DATE: FEBRUARY 1, 2026)
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