青岛百思精密机械有限公司
BESTOOL offers a wide range of thread gages manufactured to the higher quality. All of the thread gages manufactured by our plant including our master and working gages meet and exceed specifications established by the American Petroleum Institute (API) and hope to supply leading products for the customers all of world in the our lines. All our API thread gages can be calibrated and traceable to the National Institute of Metrology(NIM). Also, BESTOOL strives to offer our customers the highest possible value when it comes to their gaging requirements.
Website：www.chinabestools.com