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Part of Trump's "maximum pressure" policy toward Tehran, the sanctions announced on Wednesday target entities said by the US to be involved in the illicit trade of Iranian petroleum and petrochemicals.

Wildfire Defense Systems only works with the insurance industry, but other privately held firefighting companies contract with industrial clients such as petrochemical facilities and utility providers.

The petrochemical industry has a long history of outsmarting regulation.

The suit is the latest in a series of high-profile legal actions California officials have taken against petrochemical corporations and plastic manufacturers.

Some 33 billion pounds of plastic waste enter the marine environment globally every year, and the problem is expected to worsen as the fossil fuel and petrochemical industries ramp up plastic production.