How Sweden combined imported aircraft with domestic development

Did Sweden simply import its torpedo-bomber designs, or develop aircraft capability of its own?

Sweden bought foreign aircraft and designs, but also developed variants, fitted different engines, and maintained substantial domestic design and maintenance capability.

Sweden bought aircraft from Italy and other foreign designs while maintaining substantial domestic design and maintenance capability. Swedish variants that the Italians did not possess show that the work extended beyond importing complete aircraft. Designs could be altered and fitted with engines from a different country. One recurring procurement pattern paired an airframe from one nation with an engine from another, apparently in pursuit of reliability.