The following is available on the Canada Border Services Agency website.
Preliminary Decisions Respecting Certain Photovoltaic Modules and Laminates
The goods in question are usually classified under the following Harmonized System (HS) classification number 8541.40.00.22. Note that this HS code is for convenience of reference only. Refer to the product definition for authoritative details regarding the subject goods.
The following is available on the Canadian International Trade Tribunal website.
Oil Country Tubular Goods, Expiry Review No. RR-2014-003
Tribunal Continues Findings—Oil Country Tubular Goods from China