Free zones must export 75% of output under new FG rules

The full article body was not supplied in the input, so a complete rewrite cannot be produced without inventing facts, figures, quotes, or context. Only the supplied headline is available: free zones must export 75 percent of output under new Federal Government rules. No additional detail, such as the issuing agency, effective date, enforcement mechanism, or affected sectors, is provided in the source material, and none will be assumed or fabricated. Please provide the extracted article content to enable a full, factually faithful rewrite for a Nigerian tax and business audience.