If the landlord doesn't know the selection criteria for buying Dendrobium candidum, based on personal experience and the characteristics of Dendrobium candidum in the existing market, I suggest that you can refer to the following points:
1, raw materials determine the quality, and polysaccharide content determines the effect: the biggest difference between different Dendrobium candidum is the raw materials, which actually determine the quality and effect of the products. Most brands have their own Dendrobium varieties.
2, depending on the place of origin, organic is healthy: in the past, wild was definitely the best, and now environmental problems are getting more and more serious. In fact, organic planting will be healthier.
Ps by the way, I don't sell this. Writing this is purely accidental. Let's just watch and play. Under the popular science, don't buy it for me in private. In addition, I often buy Caorantang Dendrobium candidum wine myself. Thank you.