新加坡采购需求：壁挂式网络机柜，4u 机架，19 服务器机柜，服务器机架机柜，服务器机架，网络机柜

I'm looking to source server racks for our upcoming project. We need durable, high-quality racks that can accommodate various server sizes and weights. It's essential that these racks have excellent ventilation to prevent overheating, and cable management features would be a great plus. Ideally, I'd like options that offer customizable configurations to fit our space requirements. Please provide details on your available products, including specifications, load capacities, and any certifications they might have. Additionally, information on pricing for bulk orders and lead times for delivery would be greatly appreciated. If there are different styles or features, a brief overview of those would also help us in making a decision. Looking forward to your prompt response!