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The outer surface is plated with copper, and the raw material of the core wire is mainly aluminum. The outer surface is scraped and the aluminum core is silvery white. The quotation per unit of aluminum is about 1/4 of that of copper, and the same volume of aluminum is only 1/3 of that of copper, so the quotation per unit of copper clad aluminum is much cheaper than that of oxygen-free copper. Copper-clad aluminum has poor oxidation resistance, faster oxidation speed in humid environment, and poor tortuosity resistance of aluminum raw materials. It is not suitable for laying in the wall, and is only suitable for customers who do not have high demand for network stability or may temporarily establish a network.　　自我感觉超级良好，个性又四海豪气的台客帅哥杨海生(傅子纯饰演)，伙同他从小到大最要好的麻吉好友林博文(陈德烈饰演)同时入伍。两人一动一静，会在成功岭上如何互相扶持？林博文因为当兵，最爱的女友田欣(钱柏渝饰演)竟发生兵变，痛不欲生的博文要如何走出情关？同梯弟兄又会如何义气相挺？老杨也觉得不应该要，四书五经从头背，想要吃透，怎么也得要个几年，再去考童生，熬上几年参加乡试，人都三十了。Come on, come on, come on(2) Out-of-pocket certificate (multiple certificates of the company): If you are not sure, please do not pay directly: call 025-96010 for inquiries. Click to enter: