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  • Qizhenbi
    Qizhenbi posted a forum topic
    plastic is convenient
    Wood-plastic composite plastic and general wood compared to the loss of the end of plastic wood. Plastic wood is a profile, according to customer need...
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    Jun 19
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  • Qizhenbi
    Qizhenbi posted a forum topic
    thermal expansion
    Natural stone of several characteristics of fire resistance of various stone are different, some stone under high temperature, the occurrence of chemi...
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    Jun 13
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  • Qizhenbi
    Qizhenbi posted a forum topic
    What are the types of asphalt?
    What are the types of asphalt?Asphalt can be divided into coal tar asphalt, asphalt and natural asphalt three kinds: First, coal tar pitch: coal ...
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    Jun 6
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  • Qizhenbi
    Qizhenbi joined our site!
    Jun 6
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