HongQiang burns 5-6hours smokeless Hexagonal hardwood sawdust BBQ charcoal briquettes hardwood sawdust briquette charcoal is low ash, high calorific value.long burning time . good use for Barbecue(BBQ) and hookah. Advantage than Indonesia /Malaysia: Features: 1) Calorific value: 7500-7800kcal 2) Ash content: <3.5-3.8% 3) Fixed carbon: ≥90% 4) Moisture: <6% 5) long >10cm. 6)10kg/ctn inside with pp bag 20feet container about 1450ctns.40ft about 2580cnts Made of 100% wood sawdust . Sawdust-briquette from extruder machine at first. Then been carbonized to the coalpit at high temperatures. Pictures : Welcome to inquiry!