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Early pneumatic tyre, use is made of coated with rubber canvas when tire body, because the canvas ordinate and horizontal lines cross each other, due to the deformation of the tire when walking, lead to rub against each other, in this way, the line is easy to be ground breaking, the tires can only run 200-300 km. In 1903, Mr. J. f. palmer invented the twill textile, which led to the development of cross - layer tires, making the tyre life a big step forward. Because the tire of the skew fork will no longer cause friction because of the tread of the tyre, the cord will not be easily worn out, so the life span will be considerably longer. In 1930, Michelin made the first tyre without a tyre. The world famous meridian tire was invented in 1946. Therefore, the development of the tire has been a long journey, in this long night, I do not know how many generations have paid hard labor and excellent wisdom
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Many home invasions occur because of trickery by the intruder. They simply request directions or pose as do-it-yourself workers, delivery persons, someone in distress, etc., so learning how to have confidence in instincts is very, essential. If a stranger knocks at the door or rings your doorbell and you feel suspicious or afraid, your instincts are sending a warning. Give yourself a moment to make a decision whether you truly wish to answer the door. Stay alert, rely on gut instincts! Answering the door might not be the top move! If you believe you may well be in peril, think about these safe home security camera
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