| 34240 | Calcium phosphate, precipitated | |
| 34629 | Calcium phosphates, disintegrated or calcined | |
| 16110 | Calcium phosphates, natural, ground | |
| 16110 | Calcium phosphates, natural, unground | |
| 34280 | Calcium phosphide | |
| 34240 | Calcium phosphinate (hypophosphite) | |
| 34240 | Calcium phosphite | |
| 34250 | Calcium plumbate | |
| 34270 | Calcium potassium chromate, unmixed | |
| 34400 | Calcium resinate | |
| 16190 | Calcium silicate, natural | |
| 34270 | Calcium silicates, precipitated | |
| 34280 | Calcium silicide | |
| 34140 | Calcium stearate | |
| 34240 | Calcium sulphate (excl. natural calcium sulphate) | |
| 15200 | Calcium sulphates, natural, whether or not crushed or ground (excl. calcined) | |
| 34240 | Calcium sulphide | |
| 34240 | Calcium sulphite, neutral | |
| 34320 | Calcium tannate | |
| 35490 | Calcium tartrate, crude | |
| 34140 | Calcium tartrate, pure | |
| 34270 | Calcium thiocyanate | |
| 34240 | Calcium thiosulphate | |
| 34250 | Calcium titanate | |
| 34340 | Calcium tungstate, luminescent | |
| 34250 | Calcium tungstate, non-luminescent | |
| 34250 | Calcium zirconium trioxide | |
| 45290 | Calculating devices for accounting machines, calculating machines or typewriters | |
| 45170 | Calculating devices, typewriter | |
| 48232 | Calculating instruments based on the slide-rule or other mathematical calculating principle (excl. calculating and accounting machines) | |
| 88767 | Calculating machines manufacturing services | |
| 45130 | Calculating machines with ancillary facilities for recording the results in code on data media (excl. automatic data processing machines) | |
| 45130 | Calculating machines, electronic, capable of operation without an external source of power, whether or not capable of printing (excl. automatic data processing machines) | |
| 45130 | Calculating machines, manually- or electrically-operated, printing or non-printing (excl. automatic data processing machines) | |
| 71630 | Calculation of insurance premiums | |
| 71630 | Calculation of insurance risks | |
| 88767 | Calculators (electronic or not) manufacturing services | |
| 45289 | Calculators, data processing (having no manual input arrangements), receiving data solely in coded form, off-line | |
| 48232 | Calculators, disc or cylindrical | |
| 45130 | Calculators, electronic, pocket-sized, capable of operation without an external source of power, whether or not programmable (excl. automatic data processing machines) | |