Laiyang Razor Clam

Laiyang Razor Clam

The Laiyang Razor Clam is a geographical indication certification trademark.

The Laiyang Razor Clam is a geographical indication agricultural product.

　　The "Laiyang Razor Clam" has a flat, elongated shell, with the shell width about one-quarter of the shell length, and is yellowish-brown in color. The shell surface features clear growth lines. From the umbo to the ventral edge, there is an oblique groove. The flesh is plump, smooth, tender, and elastic, with a deliciously sweet taste, and the broth is white, clear, and fresh. The Laiyang Razor Clam is a nationally protected geographical indication agricultural product.

　　Razor Clam: A bivalve mollusk belonging to the genus Solen in the family Solenidae, order Eulamellibranchia, class Bivalvia, phylum Mollusca. Its shell features a slightly concave oblique groove from the umbo to the ventral edge, resembling the mark of a tied rope. Commonly known as "clam," it is also called "Qing." There is an inclined inward groove from the umbo to near the center of the ventral edge, called the internal constriction groove, hence the name. It is large in size with a thin shell, plump flesh, and sweet, mellow broth.

　　Region:

　　Shandong

　　Applicant:

　　Laiyang City Fisheries Technology Extension Station

　　Region:

　　2014

　　Geographical Scope

　　The protected geographical area of the Laiyang Razor Clam covers the coastal waters within the administrative region of Laiyang City, Shandong Province. The coastline is 23.35 kilometers long, and the area spans 3,635 hectares. The city administers two coastal towns: Yangjun and Xuefang. The geographical coordinates are: 36°37′14″–36°36′50″ N, 120°52′56″–120°44′53″ E. According to rough statistics, the city has a Laiyang Razor Clam farming area of 666 hectares, with an annual catch and farming production of fresh Laiyang Razor Clams totaling over 10,000 tons.

　　Product Quality Characteristics

　　1. External Sensory Characteristics: The clams are large and plump, with an elongated cylindrical shell that is slightly rounded at the front and truncated at the back. The dorsal and ventral surfaces are nearly parallel, with the shell length generally being four times the shell height. The shell surface is yellowish-green, and the umbo is white. 2. Internal Quality Indicators: Due to its unique climate, water quality, and soil characteristics, it is rich in various essential amino acids required by the human body, as well as trace elements such as calcium, zinc, and iron, offering abundant nutritional value. Fresh product tests show protein content of 11.89–13.21 g/100g, taurine content of 2.47–3.12 mg/g, calcium content of 578.26–598.35 mg/kg, and zinc content of 32–35 mg/kg. When stewed, the meat is tender and plump, soft yet elastic, with thick, white, flavorful broth that is aromatic, delicious, crisp, tender, and smooth. 3. Quality and Safety Standards: The production environment of Laiyang Razor Clams must comply with the "Requirements for the Production Environment of Pollution-Free Aquatic Products for Agricultural Product Safety Quality" (GB/T18407.4-2001), and the product quality must meet the "Safety Requirements for Pollution-Free Aquatic Products for Agricultural Product Safety Quality" (GB18406.4-2001). Products that fall under the circumstances specified in Article 33 of the "Agricultural Product Quality and Safety Law" may not be sold on the market.