将K2的高级电炉独立出来，作为一个模组发布。
Mods introducing new content into the game.
Furnaces, assembling machines, production chains.
Hi, note that K2-derived works need to keep the GNU LGPLv3 license, it can't be public domain.
Also, note that there are some visual improvements if you take the images from github, which have not been uploaded to the portal yet.
thank you tip. i have change license to GNU LGPLv3.good luck, bro. nice tip!
