About the processing technology of hard-shelled eggs

The main raw materials used in this traditional egg preservation process include black tea, edible salt, food-grade alkali (soda), quicklime, plant ash, rice husks, and fresh duck eggs. These ingredients are carefully selected for their ability to create a unique flavor and preserve the eggs effectively over time. For the equipment, a large iron pan is essential, along with a shovel, a cylindrical container for storage, and other basic kitchen tools. The process begins by weighing out specific quantities: 1.5 kg of soda, 6 kg of quicklime, 1.5 kg of black tea, 1.5 kg of salt, 15 kg of plant ash, and 20 kg of water. The water is heated in the iron pan, and the black tea is added. After boiling, 20% of the tea juice is removed from the pot. Next, 4.8 kg of quicklime is slowly added to the mixture, and after some reaction with the tea juice, salt and alkali are introduced. The remaining 1.2 kg of quicklime is then gradually poured into the pot while stirring thoroughly with a shovel. Any lime residue is removed, and half of the prepared plant ash is mixed into the solution. After waiting 3 to 5 minutes, the remaining half of the ash and the reserved tea juice are added. The mixture is stirred again with a shovel until it forms a hard block. After about 10 minutes, the hardened clay is removed using the shovel, and the mat is allowed to cool. The next day, the solidified mud is broken into pieces and placed into a cylinder. Each egg is coated with approximately 16 grams of mud in spring and 23 grams in autumn to ensure even coverage without any gaps. A layer of rice husk is placed on top of the mud before the cylinder is sealed. The cylinders are stored in a room where the temperature remains between 15°C and 26°C. The eggs are left undisturbed during the entire curing period, which lasts around 60 to 70 days in spring and 70 to 80 days in autumn. The overall process follows a clear sequence: preparation of the mixture, batching, coating the eggs, storage, and finally, the removal of the finished product. This method has been passed down through generations and is known for producing flavorful, preserved duck eggs with a rich texture.

Wound Protector/Retractors

Custom size medical incision protectors are medical devices specially designed to protect surgical incisions from external contaminants and mechanical damage. They are designed to fit snugly over the incision area and provide a barrier against bacteria, fluids, and other harmful substances that could lead to infection.

To create custom-sized medical incision protectors, medical professionals use advanced 3D scanning and printing technology to create an exact mold of the patient's incision area. This mold is then used to create a custom incision protector that perfectly fits the patient's unique anatomy.

These devices are usually made of medical-grade silicone or other biocompatible materials that are safe for use in the human body. They are easy to apply and remove, and can be reused many times.

Custom sized medical incision protectors are commonly used in a variety of surgical procedures, including orthopedic, cardiac, and plastic surgery. They are an important tool in preventing postoperative infection and ensuring optimal healing outcomes for patients.

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