哥伦比亚采购需求：针织圆机针筒，双面针织针筒，高精度针织圆机针筒，提花针筒，单面针织针筒，针织圆机配件

I'm in need of a specific cylinder for my machine, and I hope you can help. The machine in question is a well-known brand, and I'm looking for a cylinder that matches particular specs: it's for a model with a gauge of 24 and a diameter of 30. If you have this item in stock or can manufacture it, please provide details on pricing, lead times, and any other relevant info. I'm eager to explore options, so your prompt response would be greatly appreciated. Thanks!