... difficultly-grinding materials as follows: bamboo power, husks, Chinese herbal medicine, cortices, leaves, wheat bran, konjak, ... , hawthorn, dried ginger, garlic, pumpkin power, seasoning, Chinese dates, paper, plastics, chemical materials, plants in the sea, flavoring, ... materials, medicine, health care, welding rod, breeding, paper making, rubber, food and mosquito-repellent incense, etc2. ...