Usually anti-dumping tariffs and penalties are justified as preserving the market share of domestic firms. The implication is, the price of the Chinese stuff is low now, but once they get their hooks in, they'll jack up the price. Marty is suggesting that this low price might be a one-time burst of volume, with low levels of production volume afterwards. I think that's a naive assumption and it wouldn't change my answer.

Tariffs for their own sake are bad.
Tariffs are only good if you can justify them in terms of national interest. We have to admit that the tariff raises the price, admit that we can't make the product as cheaply as they make it, explain why, and explain why it's good to preserve our way of doing it.
The justification has to be in terms of national security, worker safety, or carbon intensity. And it has to be persuasive. Other than that, I don't favor tariffs.

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