英国采购需求：庭院标牌、塑料瓦楞板、科络普板、塑料瓦楞纸箱、塑料芦笋盒、塑料秋葵盒

I'm interested in ordering a party backdrop board sized 1828.8 x 1000 mm, complete with a stand-up support at the back to ensure it stands independently. Could you advise me on the appropriate thickness options available (2mm, 3mm, or 4mm)? I'd like to know your minimum order quantity and the cost per sheet if cut to these dimensions, specifically in white. Additionally, I'm looking for information on the estimated shipping time to ensure timely delivery. Your insights on these details would be greatly appreciated!