, explain holothurian nutrition abounds degree. What in food big sea lives inside the country is holothurian grow development is mature, nutrient material content is high, value nature is tall also.
Size is even, sand is not had in the abdomen. Some pedlar are obtain sudden huge profits, use illegal method, toward the fill in holothurian abdomen sand, salt or aluminous, in order to add weight.
Carry holothurian when should notice color, some candy do holothurian Hei Liang unusual, want discreet choose and buy.
 charcoal is black: In process of past fisherman treatment, what join to assure thorn is long save, local fisherman uses the air after plant ash joins thorn pack on last treatment working procedure, thorn joins the ash is carbon that also says so, as the development of the life and the change that machine craft, plant ash is replaced by charcoal place, rose fight the action that sucks tide, so that be saved for a long time.
 the nature that join system is lubricious: Thorn joins not be black completely, because fresh because thorn ginseng grows in the different position of sea mile, some seams li of some to be in algal clump in stone, some falls in direct surface, acceptance sunshine illuminate is different color is so different;
 the surface has slight white a little salt: Method of this kind of treatment is a tradition authentic old weak dry (old law is weak dry) treatment means, minim a little salt of the surface is salt of extensive of the nature that join system, because did not add fuel or other appearance processing, look so get minim a little salt, only very few fisherman holds this kind of convention now, ginseng of this kind of thorn is traditional and authentic, the maintenance of the oldest rate the former juice raw ingredient that thorn joins, the price also a little a few more expensive.
Besides afore-mentioned when beyond, ask you to notice: Buy holothurian should go state-operated bazaar and the businessman that credit assures, be decieved in case be duped, cause needless loss.