The producing areas of Huai salt are distributed in the Embroidered Needle Estuary at the junction of Sulu and Shandong in the north and the Yangtze Estuary in the south, spanning Lianyungang, Yancheng, Huai 'an and Nantong 13 counties, covering an area of 653 square kilometers.

As early as the Helu era, the coastal areas of Jiangsu began to cook seawater as salt. Emperor Wu of the Han Dynasty recruited people to stir-fry salt, cut grass and stir-fry, the iron plate was hot, and the sea was cooked for salt, which could produce thousands of pounds day and night. In the Tang dynasty, ditches were dug to draw tide, pavilions were paved, ashes were drenched with brine, and boiled in a frying pan, and special salt production began. Jiangsu coastline has the largest and widest coastal beach in China with four distinct seasons, which is suitable for sea salt production. Today, Huai salt producing area is one of the four major salt producing areas in China.

Introduction of three other saltworks in China;

1, Luchang Yantian: Luchang Yantian is the largest Yantian in China, located on the coast of Bohai Sea, accounting for about a quarter of the total sea salt production in China. It consists of Luchang Hangu saltworks, Luchang Seaview Group, Luchang Daqing saltworks and Luchang Nanbao saltworks. Among them, Luchang Hangu Salt Field has the longest history, and its predecessor was Lutai Salt Field established in Tongguang three years in the later Tang Dynasty. The salt brick fired by Lutaichang was the only royal tribute salt brick in Ming and Qing Dynasties, and became the first brand of China's time-honored brand.

2. Liaodong Bay Yantian: Yingkou Yantian, located in Liaodong Bay Yantian, China, is the largest Yantian in Liaoning Province, with an output of 304,000 tons and a production capacity of 800,000 tons per kloc-0/989. Products sell well in Northeast China and other domestic regions, and are exported to more than 30 countries and regions such as Japan, North Korea, Canada, Netherlands and Israel. The site is located on the southwest coast of Liaodong Peninsula, with an area of 175 square kilometers, and is known as the Baili Silver Beach.

3. Laizhou Bay saltworks: Laizhou Bay saltworks in Shandong Province, and Laizhou saltworks in Shandong Province are large national second-class enterprises. At present, there are 800 employees, mainly producing raw salt, sun-dried salt and other related salinization products. The annual output of raw salt in this company is 2 million tons. Yinshan brand large grain crude salt enjoys a high reputation at home and abroad.

Baidu Encyclopedia-Origin of Huai Salt