We have a simple process to make Silicon Wafers . This can almost be placed anywhere and the Wafers sent to the bus, or used as the 4th phase for a short trip to the next process. I've simply out put them on the same belt as plastic to be bussed along the top bus to the next process.
Part 5 Electronic Circuit Boards https://factorioprints.com/view/-L8XVXXqOCVFaof7_LqY