丙bing烷wan進jin口kou成cheng本ben居ju高gao，企qi業ye受shou此ci支zhi撐cheng紛fen紛fen推tui漲zhang報bao價jia。與yu此ci同tong時shi，中zhong上shang遊you加jia快kuai庫ku存cun消xiao化hua

，年nian前qian備bei貨huo意yi願yuan較jiao強qiang，對dui市shi場chang情qing緒xu帶dai來lai提ti振zhen。然ran而er近jin期qi需xu求qiu訂ding單dan已yi近jin尾wei聲sheng，下xia遊you補bu貨huo意yi願yuan低di迷mi
，成cheng為wei製zhi約yue行xing情qing的de主zhu要yao因yin素su。僅jin憑ping成cheng本ben拉la動dong而er需xu求qiu未wei見jian起qi色se，市shi場chang成cheng交jiao難nan有you明ming顯xian改gai善shan。綜zong合he來lai看kan，今jin日ri價jia格ge或huo試shi探tan性xing上shang移yi，但dan受shou需xu求qiu製zhi約yue，上shang行xing空kong間jian有you限xian。