There is provided a technique that includes: a first processing module including a first processing chamber for processing vertically arranged substrates; a second processing module including a second processing chamber for processing the substrates, the second processing chamber disposed adjacent to the first processing chamber; a first exhaust box storing a first exhaust system exhausting the first processing chamber; a second exhaust box storing a second exhaust system exhausting the second processing chamber; a common supply box controlling at least one of a flow path and a flow rate of process gases supplied into the first and second processing chambers; a first valve group connecting gas pipes from the common supply box to the first processing chamber such that a communication state is controllable; and a second valve group connecting the gas pipes from the common supply box to the second processing chamber such that a communication state is controllable.