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Hunan Tianying Drilling Machine Manufacturing Co., Ltd.

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Quality Control

Tianying fouce on the quality for all the drill bit. every products need to pass 4 steps for the QC department before ship to the clients,

1. QC for the raw materials.

2. QC for every steps during the production process.

3. QC for the finished products and into the warehouse.

4. QC for after finshed the packing and ship to clients.

Hunan Tianying Drilling Machine Manufacturing Co., Ltd.

Contact Person: MrsShirley Wu

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