Stressing a local spirit, they take as their material easily igniting and long-burning acacia trees from wind breaks and shelter forests in Taoyuan, Hsinchu and Miaoli counties. After a long period of experimentation, they have discovered that acacia trees over ten years old which are greasy under the bark give the best results.
在強調本土精神下，他們就地取材桃竹苗一帶防風林、保安林中易燃耐燒的相思樹，經過長期實驗，發現十年以上、樹幹中心呈凝固油脂狀的樹作為薪柴效果最好。