during decolonisation period between 50s-70s many newly independent countries saw international trade/TNC's as exploitative + prefered to keep foreign firms out and be self-sufficient through import substitution
some asian countries instead chose to open up to FDI
to act as a trade barrier to domestic firms as the govornment can pay to allow firms to accept a lower market price which will undercut the price of imports
under chairman mao ze dong china was communist and 'switched off' from the global economy and most people in rural areas lived in poverty
in 1978, deng xiaoping introduced the 'open door policy' which introduced economic liberalisation and opening up to FDI whilst remaining a one party political system
SEZs were created on the coast, attracting a rapid inflow of FDI