The radiation damage of building materials to the human body is mainly carried out in two aspects: one is external irradiation, mainly γ-ray ionizing radiation; the other is internal irradiation, mainly by inhaling radioactive gas--氡, releasing α in close proximity in the body. Radiation, which breaks down cells in the body and destroys the physiological balance, causing damage to the human body. The gamma ray energy is low and the penetrating ability is very strong. Because humans have a certain immunity to the long-term adaptation of the earth's radiation, the harm of external irradiation to humans is not obvious. Many of the radioactive granite mines have lived for generations. The people did not feel uncomfortable and their life expectancy was not low because they had adapted to this high-radiation environment. The native radionuclide 238U becomes radium during the decay process, and the radium decays into a sputum, which continues to decay and emits radiation. Radon is a radioactive inert gas heavier than air. It is easy to deposit in low places in the house. In an environment where it is not ventilated or humans stay for a long time, it is easy to attract the body and endanger the human body. Internal exposure is the most harmful to humans. The only way to prevent it is to have more ventilation in the room to reduce the amount of sucking.

Although the radioactive standard stipulates strict classification control indicators for granite radioactivity, it does not mean that Class A stone is absolutely safe, Class B stone is absolutely unsafe, and there is also a dose scale; it cannot be said which stone. The variety is absolutely green, and which stone is absolutely unsafe, because some granites vary according to mineral composition, and radioactivity is from Class A to Class C. Therefore, in actual use, the batch product should be tested to a qualified testing unit to determine its exact radioactive content, and then use a flexible awareness based on its use and dosage. For example, Class A granite with an internal irradiation index of 0.9 must be used for indoor ventilation. It is best not to use it in a long-term closed room such as a bedroom. For a Class B stone with a small amount, for example, the internal exposure index is 1.1. It is not uncommon for granite to be placed in the bedroom as a window sill or a coffee table. That is to say, the use of stone with a lower level of radioactivity should also be treated with more ventilation in the room, because other building decoration materials such as walls and the like will also emit helium. In addition, the half-life of radioactive materials contained in building materials is as long as hundreds of millions of years. It is a long release process. Unlike formaldehyde, VOC and other toxic substances in furniture, the concentration and toxicity are reduced by volatilization over a period of time. Always there.  

Plastic Drag Chain (Plastic Cable Drag Chain) can be used as a component or service parts in glass machinery, handing and transport machinery, painting and decoration equipment, shoe-making machinery, chemical machinery, textile machinery, welding machines, automatic welding system, plastic machinery etc.

After a series of tests, we arrived at the same conclusion that our plastic drag chain (plastic cable drag chain) can withstand about 15 million movements. The quality of our plastic drag chain (plastic Cable Drag Chain) is guaranteed. 

1.     XDTLF20 Series Plastic Drag Chain (XDTLF20 Series Plastic Cable Drag Chain)

 Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

2.     XDTL07 Series Plastic Cable Drag Chain

3.     XDTL10 Series Plastic Cable Drag Chain

4.     XDTL15 Series Plastic Cable Drag Chain

5.     XDTL18 Series Plastic Cable Drag Chain

6.      XDTL25 Series Plastic Cable Drag Chain

Plastic Cable Drag Chain

Plastic Cable Drag Chain,Closed Type Cable Drag Chain,Wire Tracks Cable Drag Chain,Engineering Cable Drag Chain,Open Both Side Drag Chain

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