塞拉利昂采购需求：交通信号灯、信号灯、警示灯、太阳能交通信号灯、交通信号灯系统、移动交通信号灯

I'm looking for a supplier for several types of steel octagonal poles. I need 1,000 units of 9m poles, along with lesser quantities of 12m, 16m poles with varying load capacities. Additionally, I'm interested in crossarms—both 1.8m and 2.8m sets designed for specific voltage levels. Please provide your best pricing, lead time, and any relevant certifications for these products. I'm keen to establish a reliable partnership, so details on bulk orders and material specs would be greatly appreciated. Looking forward to your prompt response.