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A window is an opening in a wall, door, roof or vehicle that allows the passage of light, sound, and/or air.

Five ways to distinguish whether plastic steel doors and windows are poisonous

Summary:First, look at the name of the product profile. Toxic plastic steel doors and windows generally use low-priced lead salt...
First, look at the name of the product profile. Toxic plastic steel doors and windows generally use low-priced lead salt stabilizers as their main raw materials. This raw material contains lead and is named "PVC profile". Non-toxic plastic steel doors and windows use non-toxic, non-polluting and environmentally friendly mercaptan organotin T-137 stabilizer named "VPVC profile".
Second, look at the packaging label. Look at the product name, implementation standard, factory name, factory address, quality level, etc. marked on the product packaging or label. For example, whether the basic content annotations are complete, whether there is ghosting or deviation in the color of the text or pattern.
Third, look at the quality inspection certificate. After choosing the plastic steel doors and windows, you must ask the dealer for the product quality inspection certificate. If the inspection item in the certificate or inspection report is marked with lead content, it proves that the product is a PVC profile.
Fourth, look at the color of the product. The color of toxic plastic steel doors and windows is white. Although white, it gives people a very "stupid" intuitive feeling, that is, it is dark or white and blue with a strong sense of cleanliness. After a period of use, it will gradually become gray due to the pollution of sulfur and sulfide in the atmosphere black. The color of the non-toxic plastic steel is pure, like ivory white, with a bright and clean feeling of crystal clear and soft, with the feeling of penetrating into it, and it will not be gray-black when polluted by sulfur and sulfide in the atmosphere.
Fifth, look at the effect of use. Lead salt plastic steel doors and windows will form lead dust on the surface under the long-term action of sunlight and heat, which will cause lead poisoning and lead pollution. After lead enters the human body, except part of it is excreted through feces and sweat, most of it is deposited in the bone marrow and melted into the blood, which damages the bone marrow hematopoietic system, cerebral nervous system, urinary system and reproductive organs. Lead can also hinder the body's blood synthesis, leading to anemia, headache, dizziness, fatigue, drowsiness, constipation and sore limbs. The above symptoms will not occur when using organotin plastic steel doors and windows.