... high burning rate , easy to store and convenient to transport, and its size is only equal to 1 / 30 ... of the original straw and its density is 0.9-1.4g / cm3, and its calorific value can reach ... CommitmentWith strong technical force, sound management system, and first-class sense of quality, it is possible ... of round-trip air ticket and the cost of board and lodging, and you should also bear the ...