There are generally 2 to 3 oysters per pound. The size of small oysters is 2-3 taels per piece, and the price is 380-400 pieces per piece. The size of medium oysters is 3-4 taels/piece, 250--270 pieces per piece. The size of Zhongda oysters is 4-5 taels per piece, 200-220 pieces per piece. The size of large oysters is 5-6 taels/piece, 180-200 pieces per piece.

Oyster (ostreagigastnunb), commonly known as sea oysters, oysters, etc., belongs to the phylum Mollusca, class Bivalvia, and order Pearl Conch. It is the largest cultivated shellfish in the world and an important marine biological resource available to humans. One is a globally distributed species. Oysters are not only delicious and nutritious, but also have unique medicinal value. They are a seafood treasure with high nutritional value. Oysters contain the highest amount of zinc among human foods.