Lab
When productivity modules are used in labs, the productivity bonus is directly calculated and applied each tick so the productivity bar is simply cosmetic. This means that it does not matter that the productivity bar resets when the research is changed, no productivity bonus is lost. [https://forums.factorio.com/26860]
Ingredients: 10× Electronic circuit10× Iron gear wheel4× Transport belt
Output: 1 per craft → 30/min (single machine, no modules)
