美国采购需求：办公椅，办公桌，办公沙发，文件柜，学校家具，培训家具

I'm interested in sourcing products in black. Could you provide me with your current catalog that features all available items in this color? Additionally, I'd like to know the specifications and pricing options for the black variants. It would be great if you could also share any minimum order quantities or lead times associated with these products. Looking forward to your prompt response so we can explore potential collaboration!