Detailed Product Description D.C.AMMTER:Please let us introduce ourselves that NEW EDUCATION LABORATORY (NINGBO) CO.,LTD especial manufacture educational ... calorimeter, dynamometer, digital PH meter, etc) , balance, electrical parts(any plugs). LAB glassware, Lab instruments etc. We are ... .BEST REGARDSGEORGE XU NEW EDUCATION LABORATORY (NINGBO) CO.,LTD115# 1st XingGong Road , Ninghai Town,Ningbo, ...