Quality Assurance


Our system complies with GB/T 19002, GJB9002 and IECQ.

Our corporate control plan can be divided into three main parts:

---- Incoming inspection on raw materials
Not only there is restriction on the scope and number of supplies, but also the keys parameters of each batch of raw material are inspected by our inspectors when it enters our factory and is put in storage.

---- Process inspection
At each process, semi-finished products are tested or controlled by SPC method so that the finished products comply with the specification.

Each important process is followed by a Quality Control Point (QCP) Where the decision is made to continue or stop the batch if unacceptable parameters are found (nonconforming batch procedure).

On the other hand, results from one process stop can be used to monitor the following step, e.g. results of granulation are used to define the pressing conditions of the relevant batch.

A typical example of manufacturing flow chart dedicated to U/E cores for power applications is shown hereafter. For each process step, (QCP) controls are performed on the defined test vehicles. The relevant test vehicles could be powder samples or pieces of semi-finished ferrite parts.

The complete flow chart is split into two main parts: powder reparation and core production.

In Fig. 1, QCP is Quality control Point and SPC is Statistical Process Control.

---- Outgoing Inspection

Each lot must pass through a final outgoing inspection before entrance into the sales warehouse. During the outgoing inspection, all results collected on relevant lot a re checked, some samples are controlled and test report is printed upon request. 


The following information can be got from the label stuck on each packing unit:

-- customer name and customerís part number

-- material brand and type of core concerned

-- code name of the inspector

-- lot number

-- name of the manufacturer and its address

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