埃塞俄比亚采购需求：侧壁货运半挂车，购买，最优价格，侧壁拖车出售，耐用货运拖车，重型半挂车

I'd like to get some detailed info about your wholesale pricing for the products I'm interested in. Could you please provide me with the price per unit, including any bulk purchase discounts that might apply? Also, I'd appreciate knowing the country where these products are manufactured. This info will help me in making a decision, and I'm looking forward to your prompt response. Thanks!