After our factory with dental rules to do testing, test results are as follows<br>Forty-nine 3" have 15 good products, 34 are bad, and 4" 29 are good.<br>After investigation found that the cause of the bad product is not the thread depth but the pitch, because even if the thread depth is very deep, the lock does not enter there will be no impact.<br>In addition, good products will be returned to you, and the bad products we will send you supplements.
正在翻譯中..