马尔代夫采购需求：水槽、水龙头、马桶升降机、LED镜子、垃圾处理器

I've noticed that the force handle on our Oulin product is currently loose, and I'm looking for guidance on how to securely tighten it. This issue has been affecting its functionality, and I would appreciate any instructions or tips you can provide to remedy this situation. Could you also let me know if there are any specific tools or techniques I should use? Any additional information on proper maintenance would be helpful to ensure everything remains in good working order. Thank you!