About BCI Bulk Commodity Index(BCI) is the monthly index to monitor China macro-economy. Its mechanism is as follows: 1. Select 100 commodities which covers Oil, Energy, Petrochemicals, Textiles, Metals, Non-ferrous and mostly represent the above 8 industries 2. Count the rising number(RN) and the falling number (FN) 3. Calculate the value of BCI by the formular of BCI=(RN-FN)/100 Based on the above mechanism, the BCI can show 3 points: 1. BCI>0 indicates that China manufacturing industry economy is expanding; 2. BCI=0 indicates that China manufacturing industry economy remains steady. 3. BCI<0 indicates that China manufacturing industry economy is shrinking.