After our factory test with the tooth gauge, the test results are as follows<br>Of the 49 3 "samples, 15 were good ones, 34 were bad ones, and 4" 29 were all good ones.<br>After investigation, it is found that the cause of the defective products is not the thread depth but the pitch, because even if the thread depth is very deep, it will not affect the locking.<br>In addition, we will return the good products to you, and we will send the defective products to you again.<br>
正在翻譯中..
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