Page 5 - Quality Control and Assurance

QA/QC Processes

P&H’s complete QA/QC Program is
available for review upon request. The
basis for our program includes

1) QA/QC Organization

We have dedicated Quality Control
Managers in all manufacturing and
design areas.

2) Work Verification

Our quality assurance plan details
who is responsible for carrying out a
particular task, and who is
responsible for checking the work.

3) Material Receiving

All materials used for production must meet the specifications of P&H quality
standards which specifies the characteristics of the base materials. The plan
assigns the task of verifying incoming material and details the inspection that is
required. Material that doesn't meet the requirements is returned.

4) Manufacturing Qualification

All products from our manufacturing operations are tested according to an ISO
Acceptance Sampling method. Acceptance sampling is conducted to decide
whether a batch of product (e.g., supplier components or finished units) is of
acceptable quality. We test a random sample of all products after manufacture and
prior to placing into inventory. Sample size and acceptance criteria are based on
predetermined, established principles. After the batch is tested, a decision about the
entire batch is reached from the sample test results.

5) Quality Feedback
Our quality program can only derive full benefit from a feedback mechanism, so the
P&H quality assurance plan implements feedback through investigation of
customer complaints and the correction of non-compliance issues. Customer
service representatives responsible for quality assurance receive copies of all

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