新加坡采购需求：bb货物、平板货架、平板卡车运输、开顶集装箱、服务

I'm reaching out to inquire about your rates for air freight services from China to Malaysia. I have a shipment with dimensions of 2100mm x 300mm x 400mm, and I'd like to get an idea of the costs involved for this transport. In addition to pricing, please include any relevant details regarding transit times and any additional fees that might apply. Additionally, it would be helpful to know about your handling processes, especially concerning customs clearance and any potential issues that may arise during shipping. If you could provide a quote and any necessary information at your earliest convenience, I would greatly appreciate it. Looking forward to your prompt response!