The domestic price for white carbon black on September 30th is 7000 yuan/ton. The specification of white carbon black includes: application grade: rubber grade; production process: precipitation method; SiO2 content ≥%: 90; pH value: 5.0-8.0; specific surface area m2/g: 161-190; the validity period of this quotation is 3 days. The quoting company is Shandong Longhui Chemical Co., Ltd.