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?1. The thermal insulation is good, the thermal loss is low, the thermal loss is only 25% of traditional pipes, a great amount of resources can be saved and the energy costs can be decreased significantly when running for a long time;

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2. The products can have very strong waterproof and corrosion resistance capacity and relatively high mechanical strength, which can satisfy the thermal stress requirements of directly buried and laid installation without compensation;?

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3. The operation and service life is more than 30 years, and correct installation and use can make the network maintenance costs extremely low;

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4.??Piping trench doesn't need to be laid, and they can be buried underground directly. The construction is convenient and efficient, and the comprehensive cost is low;

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5. The products can be directly buried underground, which is advantageous to the landscaping and town planning.?