Send the following on WhatsApp
Continue to ChatMaterial flows - a logistical category, which is the movement and / or transformation in the economic sphere of material objects, which include energy carriers, raw materials and materials, work in progress, etc. https://www.newsaperp.com/km/blog-526-ក-រគ-រប-គ-រងវត-ថ-ធ-ត-ដ-ម-ក-រពន-យល-យ-ងស-មញ-ញអ-ព-ម-លហ-ត-ដ-លច-ប-ច