This type of chemical injection skids is most suitable at offshore platforms where there are severe space constraints and a need for injecting different chemicals at the same location. Different types of chemicals can be stored in different compartments of the rectangular tank which can be placed on the same skid base frame. Each compartment of the tank has a separate set of pumps (single or multi-head), valves and instruments. Controls for the whole system can be integrated into one system. Skid size and cost benefit can be better achieved in this package, compared with a conventional type of skid.