The American company launched an online, television and radio campaign to highlight its work with 560 Canadian parts suppliers it says supports 17,500 jobs while directly employing another 2,000 people, contributing USD 3.2 billion to Canada's economy per year.
"Boeing's partnership with Canada spans an entire century dating back to when founder Bill Boeing launched the world's first international mail service between Vancouver, B.C., and Seattle in the Boeing C-700," said managing director Kim Westenskow.
The campaign's slogan? "Committed to Canada."
But on Twitter, Canadians said Boeing was only "committed to ruining a Canadian company," "committed to screwing us," "committed to protectionism," and "committed to destroying our aerospace industry... thanks a bunch."
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"Canada is no longer committed to Boeing," said another online post.
Boeing's campaign followed widespread criticism that it had manipulated the US trade remedy system to try to prevent a new competitor from selling in the key US aviation market.
Bombardier's CSeries is the first new design in the 100- to 150-seat category in more than 25 years, and US-based Delta Airlines has ordered 75 of them.
During a conference call for the airline's third quarter results, Delta chief executive Ed Bastian said the duties imposed on the CSeries were "nonsensical," and vowed not to pay the additional tariffs.
The trade row escalated to include rebukes from Canadian Prime Minister Justin Trudeau, who vowed to retaliate by nixing plans to buy 18 Super Hornet fighter jets from Boeing, and Britain's Prime Minister Theresa May, who is worried for 4,200 CSeries wing assembly jobs in Northern Ireland.
Bombardier, meanwhile, has noted that the CSeries rollout would generate more than USD 30 billion for US suppliers and support 22,700 American jobs.