... 4.high quality synthetic diamond micropowder 0-0.5 micronsfeatures:1.famous factory in China2.20years experience3.famous brand4 ... 15 countries and regions as the U.S.A,Japan,Taiwan,Belgium,Germany,India,etc,which enables ... 3.5-7√√√2.5-5√√√2-5√√√2-4√√√1.5-3.5√√√1-3√√√1.5-2.5√√√1-2√√√0-2√√√0-1.5√√√0-1√√√0-0.5√√√0 ... -0.25√√√0-0.2√√√0-0.1 ...