Rafinery, pipes underground

Hello, the refinery is working 100%, after that you only need to consume the raw materials produced, the pipes are underground:

1. First, you need to dig a hole for 4 units. 2.We provide a diagram of the pipes and refinery. 3.We remove buildings and build pipes.
2. We backfill/level the area. 5 Paste the diagram again into the protruding ends - apply it to the pipe system, build buildings and it works!!