乌干达采购需求：办公椅，办公桌，办公沙发，文件柜，学校家具，培训家具

I'm looking to source ergonomic mesh office chairs that combine comfort and functionality. Ideally, these chairs should feature adjustable components to cater to different body types and sitting preferences. The design should promote optimal posture and provide good ventilation while working for extended hours. Additionally, I'm interested in understanding the materials used, the weight capacity, and any customization options available. Please include details about your production capacity, lead times, and pricing structure. If you have certifications or any guarantees regarding durability and safety, that would be beneficial as well. Looking forward to your prompt response!