卡塔尔采购需求：办公椅，办公桌，办公沙发，文件柜，学校家具，培训家具

I'm looking for a low backrest visitor chair that comes equipped with wheels. Ideally, the color would be beige since I aim for a neutral tone that fits well in various office environments. The design should prioritize comfort and ergonomics for guests while maintaining a modern aesthetic. Could you provide me with more details regarding the materials used, dimensions, and weight capacity? Additionally, I'd appreciate information about any customizations available, bulk pricing, and lead times for an order. Please also include your warranty terms and after-sales support options. Looking forward to your prompt response!