California's complete ban on single-use retail plastic bags took effect on 1 January 2026, and twelve US states now run their own rules. For retail buyers this changes the question from "what is the cheapest bag" to "what can I prove". This guide gives a seven-question checklist for qualifying custom reusable bag suppliers, a specification template you can send with an RFQ, and the red flags that signal a quotation will fail you at inspection.
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