The Fuzhou Bay area of ​​Dalian is known as the “Hometown of Chinese Sea Salt”. Since the Qing Dynasty, it has been a famous producer of sea salt in China. Due to the special geographical location of the sea area, high-quality sea water resources and vast muddy tidal flats, the sea salt produced here is crystal clear and white, and the purity of crystalline sodium chloride is high and the content of heavy metals is extremely low. Fuzhou Bay Haiyan still maintains the traditional sun-making salt-making process, and the production process is non-polluting, retaining the minerals and trace elements naturally contained in the seawater to the greatest extent, and the taste is pure and delicious. The annual salt and sea salt of Fuzhou Bay Salt Field is nearly one million tons, which is one of the four sea salt fields in China.

Technical requirements for sea salt quality in Fuzhou Bay 1. Raw materials Seawater in the sea of ​​Fuzhou Bay. Second, processing Process flow: 2. Process requirements: (1) Halogen production: Nasd and water: According to the change law of tidal and seawater concentration, seawater is included in the water storage circle, and the water storage and evaporation zones are used to fully precipitate the sediment in the seawater. The adsorption of sediment suspended particles and flocculation and sedimentation purify seawater. Breeding: Filtering algae in seawater through natural culture of Artemia to reduce nitrogen and phosphorus in seawater. Evaporation: The solar wind energy is used to evaporate the water, so that the salinity of the seawater in the beach is gradually increased, so that the sodium chloride content in the brine is saturated, and sodium chloride is precipitated in the crystallizing pool. (2) Crystallization: Deep-water crystallization: using plastic cloth to prevent rain, deep-water crystallization, and the depth is kept above 20cm. Splitting: The new halogen and the old halogen are separately crystallized. The ratio of the splitting is usually 3:1. In the case of insufficient halogen production during the rainy season, three stages of crystallization are required, and the ratio of crystallization is 4:3:2. Irrigation pool for halogen: irrigation pool or halogen replacement with bleaching halogen, brine quality Na+/Mg2+≥4. The brine is clean and the transparency is not less than 20cm. The halogen is exchanged when the brine quality reaches Na+/Mg2+ close to 1.25. Activity: The live cockroaches begin every year from March to the end of October; the live sputum is kept at a continuous evaporation of 20mm to 30mm, and the salt sputum is to be alive and even. (3) Salt collection and storage: The salt collection time of the original salt is from mid-March to mid-October, and the temperature requirement during salt collection is above 5 °C, and the cycle is once a year or longer. The raw salt produced is shipped directly to the processing plant or to a centralized platform. (4) Processing: The raw salt is refined by pulverization, local seawater washing, dehydration and drying, color selection and vacuum re-forming technology to form sun-dried salt, crushed washing salt and refined salt. Third, the quality characteristics 1. Sensory characteristics: The project requires color white taste, salty taste, fresh, pure beauty, no odor, sea salt unique flavor state crystal, no visible visible insoluble foreign matter 2. Physical and chemical indicators: project index value raw salt sun salt Refined salt pulverized washing salt physical index whiteness - ≥55 degrees ≥70 degrees≥55 degrees particle size - 1.0-3.5 mm ≥75% 0.15-0.85 mm ≥75% 0.5-2.5 mm ≥ 80 % Sodium chloride / (%) ≥ 92.0 91.0 97.5 97.5 Moisture / (%) ≤ 6.0 6.4 0.6 0.6 Water insoluble matter / (%) ≤ 0.2 0.2 0.2 0.2 3. Safety and other quality technical requirements: Product safety indicators and other quality technical requirements must comply with the state's

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The production area of ​​Fuzhou Bay Sea Salt is Changxing Island Street and Exchange Island Street of Changxing Island Economic Zone in Dalian, Liaoning Province, and Fuzhou Bay Street of Santai Manchu Township, Qiya Township and Xieqi Town, and Jinzhou District of Wafangdian City. The administrative areas of Fort Street, Shihe Street, Shilibao Street and Qidingshan Street, including land and tidal flats.