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Trump administration to impose 15% tariff in polysilicon probe meant to counter China - aol.caaol.ca · Sun, 09 Aug 2026 20:39:00 GMTPresident Trump's Bold Action Ensures Free and Fair Trade for Domestic Quartz Industry, QMAA Industry Executives Say - MorningstarMorningstar · Wed, 05 Aug 2026 19:17:00 GMTU.S. Exempts Nepal From New Tariffs on Quartz Surface Products - nepyorknepyork · Tue, 04 Aug 2026 01:49:24 GMTCOUNTER ATTACK: Trump Slaps Tariffs on Quartz Imports Crushing American Manufacturers - Nevada GlobeNevada Globe · Mon, 03 Aug 2026 13:02:16 GMTTrump Orders Quartz Tariffs Following ITC Recommendation - Law360Law360 · Sun, 02 Aug 2026 22:43:00 GMTUS Imposes Four Year Tariff Safeguard On Quartz Surface Product Imports - BusinessToday MalaysiaBusinessToday Malaysia · Sat, 01 Aug 2026 10:02:11 GMTTrump signs proclamation on safeguard measure for quartz surface imports By Reuters - Investing.comInvesting.com · Fri, 31 Jul 2026 21:23:06 GMTTrump signs proclamation on safeguard measure for quartz surface imports - ReutersReuters · Fri, 31 Jul 2026 07:00:00 GMT