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5v~24v Graphene PI far infrared Pi Alloy heating film and all kinds of warm products element Product Description 1. “专业OEM制造商”拥有50多项自主技术专利和商标. 2. 精心挑选材料,捏合和耐压. 3. 快速加热,锁定温度. 4. 加热均匀,机动性好,温度控制准确. 5. 导热...