本发明不需脱硫，减少了焙烧环节，冶炼中无有害气体产生，无污染。

Said invention has no need of sweetening so the roasting link is saved, there are no harmful gas and pollution in smelting.

youdao

它燃烧时，无烟、无味、无有害气体产生，不怕震动及倒落，火焰近于蓝色，是一种使用方便易携带，卫生无污染、安全无意外的理想炊用燃料。

During burning, it has no smoke, smell and harmful gas generated, it is not affected by vibration and turning upside down, and has a flame approaching blue colour.

youdao