The main differences come from species and spine formation. Japanese Kanto spiky sea cucumber and Liao sea cucumber have thick body walls and well-defined spines, placing them above smooth or bald varieties. Multi-spined sea cucumber with strong layers of spines also generally ranks above bald varieties. However, a poor-quality multi-spined specimen may still be worth less than premium Liao sea cucumber, so the actual items must be inspected.

Low-salt, sugar-free sea cucumber is dry to the touch, neither sticky nor damp, has no obvious sugar bloom and tastes mild. Sugar-dried sea cucumber is weighted with added sugar and may feel sticky, unusually heavy or slightly sweet. Added sugar and excessive salt reduce the valuation because that weight is not sea cucumber flesh, so an allowance is made rather than valuing it at full weight.

Size is a positive factor, but it is not the only one. A lower head count indicates a larger and generally scarcer specimen. It must also be dry, have intact spines and contain no added sugar. A large piece affected by moisture and sugar may be worth less than a smaller specimen in clean, properly dried condition.

Yes. Original unopened packaging suggests a stable storage environment and a lower risk of moisture exposure, so it may add modestly to the valuation of the actual product. An opened box can still be accepted if the sea cucumber is dry and free from moisture damage or unusual odours. Each box will be inspected at the appointment.