如果客户投诉问题非己方责任，卖方回复时包括以下内容要点，正确排序是： ①We feel regretful to hear that 5,000 glass vases arrived at your port with 20% damaged. ②To assist your claims, we are willing to offer you the necessary documents as requested. ③After careful inspection, we estimate that the damage might be due to rough handling during transit. ④As is known to all, each shipment of our goods is strictly inspected, so we think the goods were in perfect condition when they were