Piping/ connecting this vacuum pump

Can anyone give me some advice on how to best plumb this vacuum pump for a thermoforming/ vacuum forming machine. It has 2 intake ports on one side and 2 exhaust ports on the other side. All are 1/2" threads US. It is suppose to be a 7cfm pump and was sold to me as a two stage but after looking it over I am guessing it is not a 2 stage pump? I have tried to find info online but have not had any luck, and of coarse being a Chinese made pump I can't find a manual.
mANUFACTURER Ethedeal/ China Model# BI-LMLZBY-1196-US-1-DEHM. I attached a picture as well