WHAT DOES POLISHING POWDER MEAN?

In the vibratory tumbler, most elements which has a Mohs hardness of 7 or fewer demand just two times to achieve a vivid polish (Mohs eight can need three to four days).Baada ya kuhitimu shule ya Msingi mwaka 2002 na kutaka kuanza masomo ya Secondary mwaka 2003 mama yake alimwambia aachane na Muziki kabisa na azingatie na Masomo ili aweze kupata el