Dawa Guanghe Clam Gang Aquatic Products Co., Ltd. was established in June 2010 and is a wholly-owned subsidiary of Panjin Guanghe Crab Co., Ltd. Its predecessor was the Dawa County Clam Gang Management Station directly under the Dawa government.

The clam post is located in the Liaodong Bay of the Bohai Sea, known as the Golden Beach of the Bohai Sea. The existing tidal flat area is 150,000 mu. The high tide is the sea, and the low tide is the beach. Clam Hill is famous for its abundance of clams. The clams produced are delicious and plump. They are well-known overseas and are sold to Japan, Europe and other countries and regions. With the looming tide, the clams here multiply from generation to generation, densely distributed like stars, and you can easily find them. It is known as the "Bohai Sea Clam Library".

In 2015 and 2018, 4 steel care boats with a gross tonnage of 438 tons and 1 unpowered pontoon with a gross tonnage of 834 tons were built. It is used for the tourism and breeding of Linggang. Other main equipments are: 3 production boats, 4 mechanized shellfish harvesting machines, and 3 mechanized shellfish harvesting auxiliary machines.