High-purity graphite crucibles are mainly used to smelt non-ferrous metals and their alloys such as copper, brass, gold, silver, zinc, and lead. It has the good characteristics of high stability, high density, long life, fast heating, high thermal shock r
Astragalus (Huang Qi) is a plant native to Asia. The Chinese name of the herb, huang qi, means "yellow leader", because the root is yellow and it is considered to be one of the most important herbs in traditional Chinese medicine. The part of the plant us