As a person actively supporting modern biotechnology and modern agricultural technology, one question that is often asked is: Do you dare to eat foods such as genetically modified foods that have not yet been fully confirmed? My answer is: As long as it is listed on the food, I do not consider whether it is genetically modified, as long as delicious and cheap I eat.

In fact, for most of the public, the most worrying thing is whether "this thing will not be safe." My professional knowledge tells me that “absolutely safe” food does not exist at all. Compared to traditional foods, GM foods are not likely to be “harmful”. In some ways, its security risk is even lower.

The most common question for genetically modified rice that causes many people to worry about is: “Do insects die when they eat? Can they be harmful to humans?” Compared with traditional rice, the current transgenic rice is just a Bt gene. . The role of this gene is to express a protein, which is a poison for pests. The reason why it can poison pests is because insects can bind to receptors in insects after they eat them, and thus produce toxicity and kill insects. Therefore, whether the Bt protein is "toxic" is not determined by itself, but also depends on the presence of the corresponding receptor. To some extent, the Bt protein is equivalent to half of the "Hu Fu Fu", and the receptor in the animal is the other half of the "Hu Fu Fu". Only two parts can be combined to play a role. For the human body, the receptor does not exist at all. Therefore, Bt protein does not produce "toxicity" in the human body. In fact, the use of bacteria to produce Bt protein as a pesticide sprayed on crops has been used for decades, and is used as a "pollution-free" "green pesticide." Transgenics just let this “green pesticide” production go directly in the plant.

Some people may worry that this "unnatural" protein will not produce other harmful effects in the human body. In fact, you don't have to worry about it. After all the proteins are eaten by humans, they are basically broken down into individual amino acids, and amino acids from different proteins are the same for humans. Only a small fraction of undigested protein fragments (polypeptides) may cause excessive immune reactions in the intestines, resulting in allergies.

Diamond Grinding Heads

Diamond grinding head: A kind of stone material, ceramic materials and other non-metallic materials of grinding tools, especially involving a with diamond alloy grinding tools for grinding body, it includes substrate and a mill body, in which several mill body clearance to fixed to the substrate, the grinding surface of the grinding head grinding body also set a clearance, among them, the substrate is best by a certain toughness of adhesive materials, The abrasive body is preferably made of diamond alloy material. The utility model has the characteristics of high grinding performance, simple manufacture, low cost, high grinding quality and can be applied to large-scale grinding

Through the processing of various workpiece, to achieve grinding, grinding, polishing effect; According to the use, mainly divided into the following types of grinding head:

1.grinding class: mainly installed in the grinding machine grinding head, the workpiece for grinding, grinding, grinding, processing can be divided into rough grinding and fine grinding.

2.grinding class: generally used for grinding the burr of the workpiece, or the workpiece surface precision is not high processing. Use grinding machine, electric, pneumatic and other tools to high-speed operation to achieve the effect of grinding.

3.polishing class: specially for surface finish (roughness) processing and use of higher requirements, is the need for separate processing process.

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