Indonesia's pivotal role in this new "golden triangle" is as the supplier not only of birds' nests but of two even more vital commodities: palm oil and coal for power stations.

This special triangle structure brings the right of action special functions which are different from other rights: to safeguard right, to control power and to settle social disputes peacefully.

Power strap wheel and working strap wheel must be fixed in the same plane, triangle strap should be in order, to confirm the machine running direction is the same as the mark.