29181400 -- Citric acid
10071010 -- Hybrids
85423211 ---- Multi-component integrated circuits (MCOs)
52051400 -- Measuring less than 192,31?decitex but not less than 125?decitex (exceeding 52?metric number but not exceeding 80?metric number)
39169010 -- Of condensation or rearrangement polymerisation products, whether or not chemically modified