pyridine, 4-chloro-2,3,5,6-tetrafluoro-

The chemical properties of this product are quite unique. Its nature is peaceful, and it burns when it encounters a fire. It is like dry wood meeting a flame, and the fire rises in an instant. And when it encounters water, it also has a different reaction. It melts like an ordinary thing, but it is like hot oil entering a pot, causing many changes, or bubbles escape, or a slight sound, which is really wonderful.
When its texture is stable, it is as solid as a rock, which can be honed over time without changing its shape. However, if it is eroded by strong acids and alkalis, it is like ice melting in warm spring and gradually dissolving. This is because its internal structure encounters such strong substances, and the chemical bonds are destroyed, making it difficult to survive in its original form.
Furthermore, this product will undergo a phase change under a specific temperature and pressure. When the temperature rises to a certain critical value, it gradually melts from a solid state into a liquid state, like a wax torch heated; and when the pressure suddenly increases, it is like a stubborn stone under pressure, the density increases, and the properties are fine-tuned accordingly.
Looking at its mixing with other substances, there are also many different manifestations. Mixing with some metal powders, after specific processing, may generate new substances, combining the strengths of both, just like learning from each other and giving off new characteristics. Coexisting with organic compounds can also trigger complex chemical reactions, such as molecular interactions, to generate products with novel structures.
These various chemical properties make it unique in many fields, making it a wonder substance in the world.

The main uses of this product are: First, it can be used for the repair of buildings. As "Tiangong Kaiwu" said, "Where mud is used to make tiles, excavate more than two feet of ground, and choose non-sand sticky (through'sticky ') soil". Tiles made of clay are used for house construction and repair, which can shelter from wind and rain and protect people's homes. Second, they are used to make ceramic utensils. The book records that "pottery into elegant utensils has the image of plain muscles and jade bones." Clay can be made into exquisite ceramics through special craftsmanship, or for daily use, or for ornamental products, which have both practical and artistic value. Third, it can be used to shape all kinds of sculptures. " With the help of the plasticity of clay, craftsmen can shape it into sculptures of various shapes, or as temple statues, or as small objects on the desk, carrying culture and beliefs. Fourth, it has applications in agriculture. After some clay is treated, it can improve the soil texture, enhance the soil's ability to retain water and fertilizer, and facilitate the growth of crops. Although this is not the focus of "Tiangong Kaiwu", the characteristics of clay make it have this potential use.

The production process of a certain product is delicate and complicated, with a unique method.
From the beginning, the material selection is extremely strict. It is necessary to choose high-quality materials, and their texture and character meet specific regulations. If it is made of wood, it is necessary to find fine-grained, tough wood with no defects and no insects before it can be used. This is the cornerstone of the quality of the product. If the material is not good, the product is difficult to achieve high-quality.
Next, the material preparation process is carried out. According to the needs of the design, the selected materials are cut and trimmed. Or sawed into plates, or cut into bars, the size is accurate, and the deviation must be checked. This process requires the craftsman to master precise tools. It is done with exquisite skills. If there is a slight mistake, the subsequent processes will be affected.
Then, enter the key production process. Taking carving as an example, the craftsman focuses on calm, holds the carving knife like a magic weapon, composes according to his heart, and walks on the material. First rough engraving the outline, outlining the general form, so that the object image begins to take shape. Then fine engraving the texture, such as the expression of the characters and the veins of the flowers, are all meticulously carved, and the beauty of the art is revealed in every detail. Every knife is full of craftsman's skill and effort, and strives to integrate the beauty of art into it.
The art of firing is also exquisite. The grasp of the heat is the key. If it is too prosperous, the product will be easy to crack, and if it is too weak, the texture will not be strong. The craftsman observes the heat like observing the sky. With experience and keen perception, he adds firewood and reduces salary in a timely manner, and regulates the temperature of the furnace. In the high temperature, the material has been tempered and reborn, and finally becomes a good product.
When assembling, the parts need to be tightly sewn. Where the mortise and tenon are connected, they fit seamlessly, without the need for riveting, and the structure is stable. This is not a one-day effort. It requires the craftsman to understand the shape and size of the parts, and the operation can be accurate and correct, so that the product is integrated.
Finally, it is the modification process. Or paint and color, or polish. The paint color needs to be uniform and bright, which not only enhances the appearance, but also has the effect of protection; grinding makes the surface smooth like a mirror and feels warm to the touch. Through these several processes, an exquisite product is completed, combining skills and art, and carrying the wisdom and hard work of craftsmen.

The analysis of the competitiveness of Guanfus products in the city is like the analysis of ancient tools in time. If you want to know its competitiveness in the city, you should look at its quality, price, reputation, and new numbers.
Quality is the foundation of the product. If the material of the utensils is strong and the workmanship is good, it will be used for a long time and good. If this product is of high quality, such as finely crafted jade, with warm tentacles and brilliant inner content, it can attract the attention of the public and make customers fall in love. And high-quality products can pass on a good reputation, which will last for a long time and will not fade, and are the mainstay of the city.
Those who price are also important to weigh. If the price is high but not of substandard quality, such as a pearl asking for a price that connects the city, but it is not a rare treasure, then many people will abandon it; if the price is low and the quality is poor, such as rotten wood selling cheaply, although it is cheap, no one will care about it. Only the price is appropriate and the quality is good, and if a good horse meets Bole, it will travel freely in the city.
Those who are famous are also famous. In the past, they have tasted the wisdom, which is famous all over the world, and everyone yearns for it. If the product has a good reputation, such as Zhilan was born in the forest, and its fragrance is far away. Those who have a good reputation come from the kindness of their deeds, the practice of their promises, and the praise of customers can gather people's attention and expand the territory of their city.
The new ones are also the driving force for If a product can be brought out of the past, it is like a flower in spring, which varies from year to year, and can only meet the needs of the time and lead to fashion. Otherwise, it is like old clothes, which are gradually forgotten by the world.
This product is in the market. The quality is solid, the price is suitable for people and people, the reputation is obvious, and the innovation is far away. Have both of the four, like a boat with a carriage, a horse with a bridle, and straddle the market and sea, why not have competition?

The storage conditions of this product are crucial to the survival of its quality and the maintenance of its efficacy. According to the concept and ancient common sense of "Tiangong Kaiwu", the details are as follows.
The first heavy environment is dry and humid. If it is dry, it is easy to store, and if it is wet, it is easy to perish. As mentioned in the book, many materials need to be placed in a dry place. Because if the moisture is heavy, it is easy to produce mildew, worms, and damage the product. Therefore, when storing this product, it is advisable to choose a dry place, away from water, wetlands, and good air circulation, so that the moisture is difficult to gather.
The second is the adjustment of temperature. Overheating can easily cause the product's properties to change, and if it is too cold, it may also change its texture. The experience of ancient times is that room temperature is the best. Avoid placing it in a place exposed to the scorching sun, and do not put it in an extremely cold place. In the summer heat, do not keep the product in high temperature for a long time; in the winter cold, it is advisable to add protection to prevent it from freezing.
Furthermore, prevent it from mixing with odors. Everything has its own gas, and odors invade each other, making it easy to change the original taste of the product. When hiding, do not coexist with objects with strong odors in the same room to keep their original taste pure.
Repeat, you need to prevent the damage of rats and insects. Rats and insects can destroy things. Protective measures should be taken, such as placing closed utensils, or spreading insect repellent objects in the hiding place, so that rats and insects cannot get close.
In addition, if the product is vulnerable, it should be placed carefully during storage, and it should not be pressed or collided to ensure its integrity.
In this way, following the above storage conditions, using ancient methods, sages and wisdom, and properly hiding it, the product can last for a long time without losing its characteristics and functions.