上海(hai)某電驅動有(you)限公(gong)司的夏小姐，您公(gong)司在我處定做(zuo)的ZM型米制(zhi)(zhi)螺紋(wen)環(huan)規(gui)20付，今天(tian)上午已經(jing)正常發貨(huo)，請注(zhu)意查收。謝謝合作。米制(zhi)(zhi)螺紋(wen)環(huan)規(gui)（ZM）主(zhu)要(yao)用(yong)于航(hang)空飛行(xing)器。主(zhu)要(yao)是由(you)航(hang)空產品(pin)對螺紋(wen)強(qiang)度及度的高要(yao)求。米制(zhi)(zhi)通俗螺紋(wen)環(huan)規(gui)按(an)螺距分粗牙(ya)通俗螺紋(wen)環(huan)規(gui)和(he)細牙(ya)通俗螺紋(wen)環(huan)規(gui)兩(liang)種；按(an)旋入偏向分左旋螺紋(wen)環(huan)規(gui)和(he)右旋螺紋(wen)環(huan)規(gui)兩(liang)種.