building material constructional material construction material material of construction
建筑材料;
building material constructional material construction material material of construction
建筑材料;
building material constructional material construction material material of construction
建筑材料;
PROMOTIONAL MATERIAL PRINTING
宣传品印刷;
promotional allowance
促销折让;
推销津贴;
推销津文;
促销补贴;