... rubra duroi, 2,from Burma's virgin forest as raw material. 1,Use big arbor, querxus rubra duroi, 2,from Burma ... forest as raw material. Raw materialnature oak woodprocessing techniqueit is made by the-high temperature processing of 1000°C in the unique tradition kilncombustion ... content 94%calorific value 8500kcalmoisture content4%volatile content 2.5% the monarch of the forest-oak tree