Grade one Specifications:
1) Softening point(degree: 100 - 120
2) Toluene insoluble: 28%-34%
3) Ash: Max 0.3%
4) Quinoline insoluble: 8 - 14%
5) Coking value: Min54%
6)β-resin: Min18%
7) Moisture: Max 5%

Grade two specifications:
1)Softening point(degree: 100 - 115
2) Toluene insoluble: Min26%
3) Ash: Max 0.3%
4) Quinoline insoluble: 6 - 15%
5) Coking value: Min50%
6)β-resin: Min16%
7) Moisture: Max 5%