How can I produce products when others have national patented production technologies and methods?

1. First, you need to verify that your product belongs to the patent protection scope of others. If not, you don't need it.

2. If your product is determined to be within the patent protection scope of others through comparison, you need the right holder's permission to use the technology, and whether to pay the fee depends on the needs of the patent holder.

In addition, you can also ask the agency if it is possible to invalidate the patent right. If so, the patent right does not exist from beginning to end, so there is no license and infringement.