Bamboo Powder culms are first stripped of their outer waxy cuticle using steam treatment or mechanical peelers. The peeled inner woody parts are then washed, dried and milled into a fine powder using hammer mills, pin mills or super fine grinding machines. The final powder passes through micro-sieves to achieve the desired particle size, which usually ranges between 5-100 microns depe... https://articlescad.com/bamboo-powder-an-amazing-superfood-358071.html