1, look at the appearance, high-quality sea cucumber, his appearance is basically brown, and the thorns belong to that kind of tall and straight, if it is inferior sea cucumber, his appearance may not only be purple brown, but also his thorns may be slender!

2, feel, high-quality sea cucumber, his feel is basically very comfortable, and it is the kind that is elastic and not wet. If it is inferior sea cucumber, his feel is not comfortable, and it feels wet and has no elasticity!