First, you can find some suppliers by searching on the Internet. These suppliers typically offer different types of balloons, from traditional round balloons to specially shaped balloons, as well as different sizes and colors. You can choose to place your order online and wait for the balloons to be delivered to your doorstep by the supplier. However, this approach can be risky, as you can't confirm the quality and appearance of the balloon until you get it in person.

The second method is to find a local balloon wholesaler. These wholesalers usually have offices and warehouses in commercial or industrial areas and offer a large supply of balloons. At these wholesalers, you can see the actual items, check the quality and color of the balloons, and negotiate prices and shipping arrangements with the sales staff. This method is generally more reliable because you can inspect and select the balloons in person, and you can communicate and negotiate directly with the salesperson.

Finally, you may also consider contacting the balloon manufacturer directly. This method requires more time and resources because you need to know the balloon manufacturer's contact details and communicate and negotiate with them. However, working directly with the manufacturer provides additional advantages, such as custom balloons, lower prices, and better service.

To sum up, there are many ways to choose from when looking for purchase channels for selling balloons. No matter which method you choose, you should consider factors such as quality, price, and service, and fully communicate and negotiate with suppliers or salespeople. Only in this way can you get the most satisfactory balloon products and services.