On July 24, Sinopec Qingdao Refining and Chemical Co., Ltd.'s price for butane is 5350 yuan/ton. The specifications of butane are as follows: Butane, % (V/V) ≥ 95. This offer has a validity period of 3 days. The provider of the offer is Sinopec Qingdao Refining and Chemical Co., Ltd.