Engineering reply is Dongguan business days UTC+8, target within 12 hours. A weekend or holiday upload usually enters the next Dongguan business window. The AI sketch can still preview near-instantly.
Same for quantity 1. Preview with no login. Complex or 5-axis-as-a-case jobs join the engineering queue.
The lead-time clock still starts after order and material/process confirmation, not at upload. No implants.
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