They are all old-fashioned Dendrobium candidum leading enterprises established in the 1990s, and the main producing areas are all in Zhejiang, with little difference in quality and slightly different ingredients. At present, the output of vertical drilling is larger, and Moriyama has a higher market share. Because the vertical drill is recognized by the drug name, it is more expensive to sell, and Moriyama's cost performance is relatively higher.

Dendrobium candidum:

The stem of Dendrobium candidum is upright, cylindrical, 9-35 cm long, 2-4 mm thick, unbranched and jointed; The leaves are distichous, papery, oblong-lanceolate, and the edges and edges are usually lavender. Racemes usually arise from the upper part of fallen old stems and have 2-3 flowers; Buds are dry, pale white, oval, 5-7 mm long, sepals and petals are yellowish green, nearly similar, oblong-lanceolate, lip white, with 1 green or yellow callus at the base, ovate-lanceolate, slightly shorter than sepals, and reflexed at the middle.