尼日利亚采购需求：kw20l 手机网络信号增强器，4G 手机网络信号增强器，28 频段网络信号增强器，DCS 手机网络信号增强器，手机信号放大器，手机信号中继器

I'm looking for products in black. It's important that the material and finish meet our quality standards, so please confirm the specifications on your end. I would like to know about available options, including any variations in design or features that come in this color. Additionally, I'd appreciate details on pricing, minimum order quantities, and lead times for delivery. If there are any special promotions or bulk purchase discounts you offer, please include that info as well. It would be great to get a catalog or samples if possible to evaluate the quality. Looking forward to your prompt response!