why do cost of production of radiator cap differ at different places? Answered

(Please note this is a DIY site, not a manufacturing-industry forum)

For manufacturing cost as a feature of location (only). As Pune and Mumbai aren't that far away it may be local energy costs (what do you think?), local labour costs (perhaps?), business overheads such as taxes (more like it?).
Out of interest where are costs lower?

L

Different designs. Different materials. Different suppliers. Different machinery. Different approaches to quality control. Different wages for employees. Different efficiencies in shipping. Different... well, just about everything that goes into running a business has trade-offs associated with it.