Zhong Shen Industrial Co., Ltd.

Question & Answer library

Production & Quality

Sampling, inspection, tolerances, and what happens on the production floor.

  1. Production & Quality

    What tolerances can you hold?

    We are a general injection molding manufacturer, not a high-precision molder. Commercial tolerances are what we quote against, and we will say so if a drawing needs tighter.

  2. Production & Quality

    How do you inspect parts before shipping?

    Inspection runs at four stages — incoming material, in-process sampling, first article, and final outgoing QC against an agreed AQL.

  3. Production & Quality

    What is a T1 sample and why does it matter?

    T1 is the first set of parts shot from a new tool. It is a diagnostic checkpoint, not a delivery, and it is the last cheap opportunity to change anything.

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