The stainless steel body & grinding ceramic wafer.
不锈钢制品并镶有精密陶瓷片。
The nickel-coating brass body &grinding ceramic wafer.
规格：电镀铜制品并镶有精密陶瓷片。
When the heat from the foot is applied on the top side of the ceramic wafer and cold is applied on the opposite side, from the cold of the ground, electricity is generated.
当脚部的热量作用于上层陶瓷薄片，较冷的地面作用于下层的陶瓷片时，电就产生了。
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