沙特阿拉伯采购需求：聚乙烯邮寄袋、气泡邮寄袋、纸质信封、纸板信封、快递袋、胶带

I'm looking to purchase white all-board envelopes designed for paperboard packing mailers. Specifically, I'm interested in a size that works well for various mailing needs while ensuring durability and a professional appearance. Could you provide details on the available options, including the quality of materials, pricing, and minimum order quantities? Additionally, I'd appreciate information on lead times for production and shipping so we can plan accordingly.