Kubonelelo olukhulu lokwenziwa kwezixhobo ezitshintshayo, zininzi iifektri ezikhula eTshayina, kodwa zimbalwa kuphela ezinelungelo lokungenisa kunye nokuthumela ngaphandle. Ke abanye abathengi bamanye amazwe kufuneka bathenge iimveliso zabo nge-middleman ngexabiso eliphezulu kakhulu. I-SPL, njengomvelisi wesixhobo sokutshintsha ngaphandle komthengisi ngaphandle, ibonakala kuwe ibonelela ngeemveliso ezixabiso liphantsi ezikumgangatho ophezulu, naphi na apho ukhoyo.