Features：

1.Have same function with aluminum rear cover with carbon
　holder, but have the advantage of lower cost.
2.The Long Hawn's rear cover with carbon holder is
　manufactured by adopting various special hot plasticity
　plastic materials, and is provided with high impact
　endurance. In addition, it is also the high-quality dielectric
　material certificated by UL.
3. Rear cover with carbon holder can withstand the highest
　condition request to the heat, moisture, and conductibility.