He is a Chinese owned general trading and wholesale company located in Shenzhen, China right next to Hong Kong. We buy exclusively from Chinese manufacturers who produce Consumer Wholesale Electronics, gadgets, and PC accessories. Everything we buy and sell is made in China and now you can buy these products direct from China, at wholesale prices, right here in our online discount wholesale shop. We offer you a wide-selection of consumer electronic products. This is your best opportunity to directly access the Chinese wholesale electronics market.
PM 、PCM？他们指的都是信号的编码方式。<p></p>上面的这些标志都是独立的概念，并不是固定某一种组合。