The main reason why this mod was created was that I needed to reduce unwanted higher quality to lower. If for example the assembler creates a higher quality than you cannot use, then you have no way to reduce it and you have to keep it in a chest somewhere.
This mod solves this problem! And adds some extra features.

Quality reducer

• Reduces quality to previous or directly to normal

Quality upgrader

• Increases the quality to the next or directly to the last possible
• Takes into account current quality research
• Possible to set % chance to increase quality 0-100 (otherwise the item will be destroyed)
• It is possible to disable it in the configuration

Reducer / Upgrader collector

• Two special chests into which items that have been placed in the chest are moved (teleported) to reduce or increase quality

Important

• All chests work directly with entire stacks of items, not individual items
• Input and output chests share the same inventory, so there is no need to build multiple output chests

• If logistics networks are enabled, robots cannot distinguish between the type of input or output chests. Enable this setting only when disabling the Quality upgrader chest

• I had to take inspiration from other mods because none of them suited what I needed for the mod pack. So I apologize in advance to everyone I borrowed an idea from :)