JAFFREY — China’s swift response to proposed tariffs and stock market volatility should be a clear indicator to President Donald Trump that his plans for steel and aluminum tariffs are a bad idea, U.S. Sen. Jeanne Shaheen said Wednesday.

“We’re totally dependent on the state of the economy of those businesses,”  Val Zanchuk, president of Graphicast, told Shaheen after she toured the Knight Street production plant that employs 22.  “We are pretty much at the whim of the economy.”

Graphicast makes small components for 80-plus businesses with a raw zinc and aluminum material — not the bars, plates and sheets of steel and aluminum that Trump’s tariff targets, Zanchuk said. But the tariff would affect a lot of industries Graphicast does business with.