Prosi Thang Long JSC is a leading manufacturer and exporter of high quality Cassia/Cinnamon from Vietnam. Our production lines include 4 factories located in Yen Bai, Bac Giang, Soc Son with BRC certificate, HACCP, ISO 22000:2018, FDA….In the last 3 years, our total export turnover of cassia/cinnamon is always maintained top position from Vietnam, accounting for nearly 20 percent market share. We produce and supply all premium quality cassia such as Split, Tube, Sticks, Broken, Ground, … to our worldwide buyers.