Rubber karum ai ladat hta hkan nang hkan sa ai lam ni lawm ai: powder, granule, sau bang ai, hte mater batch..
1940 ning daram hta galaw hpang wa ai Rubber tsi mawan ni hpe shawng nnan garan mat wa ai (mater batch), 1980 ning daram hta galaw hpang wa ai, 90 ning daram hta $literal mass industri
Miwa mungdan hta hka htung nkau mi gaw, lamu ga a matu hka htung ni hpe jaw ya lu ai. Sunnyjoint mung, master batch hpe mungkan gat lawk de dut shabra ai, ga shadawn, Russia, Turkey, Brazil etc..
