active commerce
4.For this need, its algorithm and technique has already been an extremely active research field in the recent 30 years, also achieves great success in commerce. We have many coding methods in the traditional and developing respect. The traditional methods, for instance, are PCM quantization, spatial and temporal subsampling coding, entropy coding, predictive coding, transform coding, vector quantization(VQ), and subband coding.
5.Active Participation of Relevant Bodies: In order to "promote the development of industrial sectors, strengthen industrial communication and cooperation, and prosper industrial economy,” the Fair has invited both domestic and foreign enterprises, commerce chambers, and associations in related industries to visit and exhibit.
6.Following the summit, three Sino-US joint committees on commerce and trade, economy and science and technology were convened in succession. The active and pragmatic attitude as reflected in the meetings helped promote the development in bilateral trade ties, reinforce exchange and co-operation, enhance mutual understanding and inject new vigour into bilateral ties.

