Tariff number Chapter 90, Section 31
9031
Other optical instruments and appliances
9031
Other
9031
Other instruments, appliances and machines
9031800000 80
- Other instruments, appliances and machines
9031803200 10
- - Electronic
9031803200 20
- - - For measuring or checking geometrical quantities
9031803200 80
- - - - For inspecting semiconductor wafers or devices or for inspecting photomasks or reticles used in manufacturing semiconductor devices
9031803400 80
- - - - Other
9031803800 80
- - - Other
9031809100 10
- - Other
9031809100 80
- - - For measuring or checking geometrical quantities
9031809800 80
- - - Other
9031
Parts and accessories
9031900000 80
- Parts and accessories
9031902000 80
- - For apparatus of subheading 9031 41 00 or for optical instruments and appliances for measuring surface particulate contamination on semiconductor wafers of subheading 9031 49 90
9031903000 80
- - For apparatus of subheading 9031 80 32
9031908500 80
- - Other