The weighted contract of each variety (such as rubber weighting) is calculated by weighting the positions of each month. The result of the calculation is the price of RMB.

2.

Wenhua commodity index, as well as various industry indexes (such as rubber board index), are calculated by arithmetic average. Firstly, all the included varieties are scaled by index, and then the arithmetic average is carried out. The result of the calculation is the number of points scaled.

3.

The unit of the ruler is the point, and the minimum number of change points is 0.0 1.