Anyone involved in the chain of distribution of a product could potentially be responsible for damages that it causes.
This could include:
The company that manufactures the product
A company that manufactures a component of the final product
A wholesaler that sells the product to retail outlets
A retail store that sells the product
For a party to be liable, they do need to be part of the “official” chain of manufacture and distribution. For example, if your neighbor sells you a product that causes you harm, they could not be held responsible for its defects.