On December 11th, Sinopec Zhenhai Refining & Chemical Co., Ltd. provided the following quotation for butadiene: 7200 RMB per ton. The specification of butadiene includes: grade: premium quality; content, %: ≥99.5%. The validity period for this quotation is three days. The provider of this quotation is Sinopec Zhenhai Refining & Chemical Co., Ltd.