On June 11, Sinopec Yangtze Petrochemical Co., Ltd.'s quotation for butadiene is RMB 13,300 per ton. The specifications of butadiene are as follows: grade: premium quality; content,%: ≥99.5. The validity period of this quotation is 3 days. The quoting entity is Sinopec Yangtze Petrochemical Co., Ltd.