You can also contact existing laundry bag manufacturers

I don't have access to specific information about manufacturers that produce water-soluble laundry bags. However, I can provide you with some general guidance on how to find manufacturers of water-soluble laundry bags:

1. Online Search: You can start by conducting an online search using search engines or business directories. Use keywords like "water-soluble laundry bag manufacturers" or "dissolvable laundry bag suppliers" to find potential manufacturers.

2. Trade Shows and Exhibitions: Attending trade shows related to packaging, laundry, or environmental sustainability can be a great way to water soluble laundry bags manufacturers connect with manufacturers. These events often feature a wide range of packaging suppliers.

3. Industry Associations: Reach out to industry associations related to laundry services or eco-friendly packaging. They may have a list of manufacturers or be able to provide recommendations.

4. B2B Marketplaces: Websites like Alibaba, Thomasnet, or Global Sources often list manufacturers and suppliers. You can search for water-soluble laundry bag manufacturers on these platforms.

5. Direct Inquiries: You can also contact existing laundry bag manufacturers and inquire if they produce water-soluble laundry bags or if they can refer you to a company that does.

When you find potential manufacturers, be sure to conduct due diligence to ensure they meet your quality and sustainability requirements. This may include requesting samples, checking their certifications, and discussing pricing and production capabilities.

Please note that the availability of manufacturers and their capabilities may have evolved since my last update in September 2021, so it's a good idea to verify the information and research current options.