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IQC

Incoming Quality Control.

LingtechPCB quality team will check the quality of all raw materials to ensure that no bad materials enter

 

the production process.In LingtechPCB, all materials must undergo strict inspections before entering the

 

warehouse.LingtechPCB has established strict inspection procedures and work instructions to control

 

incoming materials. In addition, LingtechPCB owns variety of precise inspection instruments and equipment

 

to guarantee that it can correctly judge the quality of the material being verified. LingtechPCB has advanced

 

system to manage materials to guarantee that materials are first-in-first-out.When a material is close to

 

the expiration date, the system will issue a warning to ensure that the material is used up before expiration

 

or is verified before use.

IQC, with full name of Incoming Quality Control, refers to the quality confirmation and inspection of the purchased

 

raw materials, parts or products, that is, the products are inspected by sampling when the supplier sends the raw

 

materials or parts, and the final judgment is made whether the batch of products is accepted or returned.

 

1. Main Inspection Method

 

    (1) Appearance inspection: generally use visual inspection, hand feel, and limited samples.

 

    (2) Dimensional inspection: such as cursors, sub-centres, projectors, height gauges and three-dimensional.

 

    (3)Structural feature inspection: such as tension gauge and torque gauge.

 

    (4) Characteristic inspection: use testing instruments or equipment.

 

2. QC Process

 

     IQC ⇒ IPQC(PQC) ⇒ FQC ⇒ OQC

 

    (1) IQC: Incoming Quality Control–For incoming materials

 

    (2) IPQCS: In Process Quality Control–For production line

 

    (3) PQC: Process Quality Control–For Semi-finished products

 

    (4) FQC: Final Quality Control–For finished products

 

    (5) OQC: Out-going Quality Control–For products to be shipped

 

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