International Trade Sectoral Nomenclature			CHELEM
			6 stages
ST1	Primary	HA + ... + HC + IA + ... + IC + JA + ... + JC	
ST2	Basic Manufacturing	BA + ... BC + CA + CC + GA + GC + IG	
ST3	Intermediate Goods	CB + DA + EA + EC + FA + FB + FC + FL + FS + GB + gd + Gg + GI	
ST4	Equipment Goods	FD + FE + FF + FG + FH + FI + FN + FO + FQ + FR + FU + FV + FW	
ST5	Mixed Products	DE + EB + ED + GH + IH + II + KB + KC + KF + KG	
ST6	Consumption Goods	DB + DC + DD + EE + FJ + FK + FM + FP + FT + GE + GF + KA + KD + KE + KH + KI	
NES	NES	NA + NB + NV	
TT	Total	IA + IB + IC + IG + IH + II