Chemical product design knowledge is important where it transforms customer needs to a new development that leads to new chemical goods.

The process function of rainwater harvesting is to utilize local rainwater to supply year-round water needs without the need for a large capital investment

In order to build this product, chemical engineering knowledge is required

Several factors to be considered in collecting the rainwater such as the roof, piping system, storage tank and so on.

An overall layout of the rainwater harvesting system should be built

The collected rainwater can be utilize for daily use either internal or external

Thus, a newly developed product should have its unique properties, processes and uses.

A multidimensional approach to goods and processes is required for the effective application of the chemical product pyramid and process design to produce a product that can be sold globally.