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1.We will track to every customer to get the feedback of product quality and service.


2.We can guarantee the high quality of our bits. If there are damages and defacts on the bits except anyone destroy the bits willfully,we will exchange the good ones to you. And the freight and other costs,we will bear the cost.

And we will provide the bits repair service period is 10 months.


3.If you need,please feel free to consult me at any time!

Please add the information in your inquiry.

a. the sizes of the tricone bit.

b. the IADC tooth model,like 537G

c. please tell me the information of the layer.

d. please tell me the quantity.

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