青岛百思精密机械有限公司
Qingdao Best Industrial Supply Co.,Ltd(BESTOOL) is specialized at threading solution for industry including oil field and other machining application. Besides API standard thread gauges and instruments, BESTOOL can supply OEM custom gauges or instruments for Non-standard pipe thread joints，all our API thread gages can be calibrated and traceable to the National Institute of Metrology(NIM). Welcome customers send us enquiry and we will response at first time.
Website：http://www.chinabestools.com