LDPE (Low Density Polyethylene) : Offers such advantage as tear strength and high chemical resistance. It is also waterproof.

(低密度聚乙烯)：具有以下优良性质：高撕裂强度，高耐化学性，防水性。

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LDPE (Low Density Polyethylene) : Offers such advantage as tear strength and high chemical resistance. It is also waterproof.

LDPE(低密度聚乙烯)：具有以下优良性质：高撕裂强度，高耐化学性，防水性。

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The polyurethane (PU) is a polymer formed with urethane segment, as very high resistance to tear and abrasion, good resistance to ozone, oil and petrol, is widely used.

聚氨酯（PU）是一种具有氨基甲酸酯链段重复结构的聚合物，具有很好的耐撕裂和耐磨损性，良好的抗臭氧和耐油性，应用广泛。

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Optim insulation is a hybrid material that combines the biostability and flexibility of high-performance silicone rubber with the strength, tear resistance and abrasion resistance of polyurethane, to provide increased durability and flexibility.

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