These bags are typically used for various applications, including packaging, laundry detergents, agricultural chemicals, and more. Keep in mind that the availability of manufacturers may have changed since then, so it's a good idea to conduct your own research and contact these companies directly for the most up-to-date information. Here are a few companies that were known to produce water-soluble bags:

1. Mitsubishi Chemical Corporation: Mitsubishi Chemical Corporation is a global company that produces a range of chemical products, including water-soluble film and bags under the brand name "Mitsui Chemicals Agro." They are known for their PVA (Polyvinyl Alcohol) film, which is water-soluble.
   
2. Aicello Corporation: Aicello is a Japanese company that specializes in water-soluble PVA film and bags. They water soluble bag manufacturers provide solutions for various industries, including pharmaceuticals, detergents, and agrochemicals.
   
3. Kuraray: Kuraray is a Japanese chemical company that offers water-soluble films and bags made from polyvinyl alcohol (PVA). Their EVAL EVOH resins are commonly used in the production of water-soluble packaging.
   
4. Monosol: Monosol, part of the Kuraray Group, is a global leader in the development and manufacturing of water-soluble films. They provide a range of water-soluble packaging solutions for different industries.
   
5. Adept Packaging: Adept Packaging is a manufacturer based in the United States that specializes in water-soluble packaging. They offer customized solutions for various applications.
   
6. Solupak: Solupak, based in the United Kingdom, is another company that produces water-soluble packaging solutions. They offer a range of products for businesses looking to reduce plastic waste.