瑞士采购需求：中国透明PVC薄膜，平底袋，液体平底袋，果泥吸嘴袋，高品质吸嘴袋，果汁吸嘴袋

I'm interested in sourcing a transparent stand-up drink pouch with an approximate capacity of 400 ml. The pouch should be made from a high-clarity material like PET. Requirements include a wide opening for easy filling of ice cubes and garnishes, and it must have a secure sealing method, preferably heat-sealable or a reliable closure system. Additionally, I'd like it to feature a resealable cap or spout for convenience after sealing. The pouch must be stable and stackable, ensuring safety during transport and preventing leaks. Since it's intended for ready-to-drink cocktails with ice, durability and visual clarity are crucial. I am open to both standard product options and custom manufacturing solutions.