Polyetherimide Resin Granules from Mexico
Polyetherimide (PEI) resin granules, such as Ultem, are aromatic polyethers in primary form, featuring imide-ether structures. The polyether monomer units contribute over 95% by weight, qualifying them as 'other polyethers' under this tariff item. PEI is used in aerospace, high-temperature electrical, and medical applications due to its thermal stability and mechanical strength.
Duty Rate — Mexico → Canada
0%
Import Tips
• Classify PEI granules as primary forms; if they are cut into shapes, they may fall under heading 39.26
• Provide a polymer composition certificate showing the polyether content exceeds 95%
• Check if the product is subject to Canada's Chemicals Management Plan for high-temperature polymers