2. For example, domestic steel can look at China Iron and Steel Industry Association Network, cotton can look at China Cotton Network, and apple can look at China Apple Network;
3. For the variety of international transactions, you can see the financial situation of Bloomberg and Britain (fees may be required). Com can see foreign exchange, and the trading varieties of gold ten data are also relatively comprehensive and free;
4. Any trading variety needs a combination of fundamentals and technical aspects, not just one, just one.