You've been instructed by the moderator here to continue further with English-language posts, so I'd try to follow that. Just saying
I'd encourage you to start with simpler statements, so the machine translator will have less chances to mess them up.
He 112B was the redesign of the He 112A, that itself was a redesign of the He 112 early prototypes. Each step was more refined and with lower drag, but, by the time the 112B was in
some production, Bf 109 was in
mass production at several places.
Powered by the small Jumo 210 engines, and requiring the small radiators, and after a few impotrant steps in evolution, indeed the He 112 B became one streamlined aircraft. The DB 601A-powered prototype does not seem like a very streamlined aircraft, though. We can note that the He 112B was not as a performer as the Bf 109E, or a Spitfire, for all it's (He 112B's) stremlining.
The short story with the Bf 109 - the 1st, Jumo 210-powered types were well streamlined for the mid-1930s, and far better performers than the early competition from Heinkel (like the prototypes and the 112A). Bf 109E was barely more than a Bf 109D with a much bigger and more powerful engine transplanted, that gaind both weight, drag, and performance, with ability to be mass produced. That last quality - ability to be mass produced on a short notice - was absent with the He 112.
E. Heinkel was aware of both main shortcomings of the He 112 (low performance; not good for mass production as the Bf 109), that prompted them to push with the He 100 as a definitive answer to the Bf 109.