Good discussion.
PR can save billions by trading with India. For eg. PR is now buying some of the best equipment and have placed an order from China for those (axles and other related stuff). China doesnt have the manufacturing quality of that level but they are buying it from India and selling it to PR, but @ triple the price. The earlier supplies from china are bad and hence PR is insisting on Indian made supply. If PR deals directly with Indian companies, they will get at 1/3rd the price.