卡扣普遍适用于锚固剂及火腿肠的包装工艺，卡扣能在任何厂家卡机上顺利使用，在产品包装中发挥着十分重要的作用。
Snap is generally applicable to the packaging technology of anchorage agent and ham sausage. Snap can be used smoothly in any manufacturer's card machine and plays a very important role in product packaging.
长城卡双卡封口机广泛用于火腿肠两端，密封胶，炸药封口包装，以及其它封口工序的专用设备，其功能是把规定型号的长城卡扣紧固在封口工序的两端。长城卡扣箍紧后有足够的密封性，以保证需封口工序介质的储存性能，长城卡扣以及长城卡双卡封口机是食品加工厂的必备设备。
Great Wall card double-clip sealing machine is widely used in ham sausage, sealant, explosive sealing packaging, and other special equipment for sealing process. Its function is to fasten the prescribed type of Great Wall card at both ends of the sealing process. After the Great Wall clamp is tightened, it has enough sealing property to ensure the storage performance of the medium in the sealing process. The Great Wall clamp and the Great Wall clamp double clamp sealing machine are the necessary equipment for food processing plants.