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Approve a custom toilet mold only after design-for-manufacture review, interface drawings, mold scope, sample iterations, measurable acceptance criteria, and ownership or reuse terms are written down. Buyers should make that decision before they compare polished presentations or headline prices. Begin…

A smart-toilet QC plan must connect ceramic, water, electrical, electronic, firmware, assembly, and packaging checks to the exact model and lot, with failure containment and release authority. In practice, that means the first review page should show the decision, not…