Prototype parts before you freeze a production process
AS Precision keeps a prototype team separate from the mass-order team so a first article does not wait behind a production queue. The service category page states complete prototype machining within 1 day when the geometry and material allow.
A typical prototype path on this floor: evaluate the drawing → CAM → machine or form → finish → test → pack → ship. The same ISO inspection pack used on production — material certificate when specified, process record, inspection report — can travel with the sample.
When the sample is approved, production can stay in Shenzhen or move to Bac Ninh for tariff or capacity, without changing the drawing owner.
Questions buyers actually send
Is 1-day prototype a guarantee?
It is a capability stated on the category page, not a promise for every geometry. Send the drawing; engineering will say if the clock is realistic.
Can a prototype become a batch in Vietnam?
Yes when the process is turning, simple milling, or Swiss — the work the Bac Ninh plant is set up to run at quantity.