บริการรับชุบซิงค์ Zinc Electroplating ชุบผิวโลหะด้วยไฟฟ้า I PCL

         ??????????????? ??? Zinc Electroplating ??????????????????? ?????????? ???????? Cr +3 Trivalent chromium passivation ??????????????????????????? ?????????????????????? ???????????????????????????????? ASTM ??? JIS ?????????????????????????????????? X ray Fluorescence Spectroscopy (XRF ) ????????????????????????????????????????? Sal

read more


สปริงดึง คืออะไร

         ???????? (Extension Springs) ??? ???????????????????????????????? ??????????? 2 ??????????????????????????????????????? ????????????????????????????  ???????? ?????????????????????????????????? ??????????????????????????????????????????????????????????????? ??????????????????????????????????????????????????????????????????????????

read more

สปริงกด คืออะไร

??????? ?????????????????????? ??????????????? ??? ?????? ????? ????? ?????          ??????? ???? ???????? ?????????????????????????????????????? ????? ?????? ????????? ??????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????????? ?????????????????? pitch ??? ????????????????

read more