US Slams the Door on Chinese Float Glass With 150%+ Duties, Delivers Split Verdict on Malaysia

A year-long trade investigation ends with some of the steepest glass tariffs in recent memory, reshaping the economics of importing float glass into the United States

After more than a year of investigation, the United States has finalized one of the most sweeping trade actions to hit the global float glass industry in recent memory. The Department of Commerce and the U.S. International Trade Commission (USITC) have jointly closed out anti-dumping and countervailing duty cases against float glass imports from China and Malaysia, with outcomes that land very differently depending on which country, and which company, you’re looking at.

How the Case Started

The investigation traces back to a petition filed by two Pennsylvania-based glass manufacturers, Vitro Flat Glass LLC of Cheswick and Vitro Meadville Flat Glass LLC of Cochranton. Their complaint followed the standard structure of a US trade case: that Chinese and Malaysian float glass was being sold in the American market below fair value, that foreign government subsidies were distorting pricing further, and that both practices combined were causing material injury to domestic producers.

Commerce handled the technical dumping and subsidy calculations. The USITC ran a parallel investigation into whether US industry was actually being harmed. Both agencies had to find in the affirmative for duties to take effect, and in this case, they did, though not uniformly across both countries.

China: Near-Uniform, Extremely High Duties

The Chinese side of this case produced strikingly consistent numbers. Commerce’s final determination assigned a weighted-average dumping margin of 151.29% to nearly every named Chinese exporter and producer that appeared in the investigation, an unusually long list that includes major players like Xinyi Group’s various subsidiaries (Xinyi Glass Tianjin and Xinyi Glass Wuhu among them), Shandong Jinjing’s Boshan branch, and more than a dozen other producers based in glass-manufacturing hubs like Tengzhou and Qingdao. Their cash deposit rates, adjusted slightly downward to account for overlapping subsidy findings, came in just under that at 151.27%.

Companies that didn’t fully cooperate with Commerce’s investigation, collectively bucketed as the “China-Wide Entity,” received a considerably harsher outcome: a 184.54% dumping margin and a 181.52% cash deposit rate, both calculated using adverse inferences, a mechanism Commerce applies when it concludes a party withheld information or failed to cooperate.

On the subsidy side, most Chinese producers were assigned a 19.75% countervailing duty rate. But four companies, Shandong Jinjing Science and Technology, Hubei Sanxia New Building Materials, Shanghai Yaohua Pilkington Glass Group, and Shenzhen New Kibing Technology, were hit with a much steeper 113.34% rate, again reflecting adverse inferences applied where Commerce found cooperation gaps. Commerce also identified more than a dozen companies as “cross-owned” with Xinyi Group specifically, including various Xinyi entities across Jiangmen, Chongqing, Guangxi, Dongguan, Wuhu, Hainan, Yingkou, Sichuan, Tianjin, Jiangsu, and Bozhou, meaning they fall under the same 19.75% rate by virtue of corporate affiliation.

Stack the antidumping and countervailing duties together, and most Chinese float glass entering the US now faces combined duty exposure well above 170%, effectively pricing much of it out of competitiveness in the American market.

Malaysia: A Genuinely Mixed Outcome

Malaysia’s results tell a more complicated story, and one with a late-breaking twist.

On dumping margins, the range was wide. Jinjing Technology Malaysia received a relatively modest 8.87% margin. Xinyi Energy Smart’s Malaysian subsidiary was cleared entirely, a 0.00% dumping margin. NSG’s Malaysian Sheet Glass operation, on the other hand, was assigned a steep 31.55% margin based on adverse inferences, suggesting Commerce found significant gaps in that company’s cooperation with the investigation. All other unnamed Malaysian producers default to an 8.78% rate.

But here’s where it gets interesting: despite these calculated margins, the USITC ultimately determined that dumped Malaysian imports were negligible in volume, a specific legal threshold under US trade law. Once imports are found negligible, the antidumping investigation must be terminated regardless of what the dumping margins showed. That means Malaysia will not face antidumping duties at all, even though individual company margins were calculated and published.

The negligibility finding itself had a bumpy path to finalization. An initial Commission news release on March 5, 2026 found Malaysian imports negligible, but on March 20, all three participating commissioners, Chair Amy Karpel and Commissioners Jason Kearns and David Johanson, voted to reconsider that determination. Three days later, on March 23, the Commission confirmed its original negative finding on the Malaysia antidumping case, formally terminating that portion of the investigation.

Malaysia isn’t off the hook entirely, though. Countervailing (subsidy) duties still apply: Jinjing Technology Malaysia at 17.25%, Xinyi Energy Smart’s Malaysian unit (along with its identified affiliate, Xin Yun Logistics Malaysia) at 28.45%, and NSG’s Malaysian Sheet Glass at a steep 101.99%, again based on adverse inferences. All other Malaysian producers default to 27.32%.

How the Commissioners Voted

The China vote split along different lines than Malaysia’s. Chair Karpel and Commissioner Kearns voted affirmative on both the antidumping investigation concerning China and the countervailing duty investigations for both China and Malaysia. Commissioner Johanson voted negative across all three of those same determinations. On the narrower question of Malaysian import volumes, all three commissioners agreed the imports were negligible, which is what ultimately terminated that specific investigation regardless of the split votes elsewhere.

What Products Are Actually Covered

The scope of these orders is intentionally broad but has specific technical boundaries. Covered products must be manufactured via the standard float glass process, floating molten soda-lime-silica glass over a bath of molten tin, then annealing and cutting it to size, with a minimum thickness of 2.0mm and minimum surface area of 0.37 square meters. Country of origin is determined by where that float process actually happens, not where any later cutting, coating, or fabrication occurs.

The scope explicitly captures clear, tinted, and coated float glass, including Low-E architectural glass and frameless mirror stock, along with laminated glass assemblies, insulating glass units (IGUs), and LED mirrors. Tempered glass shower and tub enclosures are covered too, though only the glass itself, not any attached non-glass hardware.

Several categories are carved out entirely: wired glass, patterned glass meeting ASTM Type II specifications (which includes greenhouse glass and textured photovoltaic glass), vehicle safety glazing certified to ANSI Z26.1, vacuum insulating glass units, framed mirrors without integrated LEDs, ready-to-use over-the-door mirrors, and small heat-strengthened washing machine lid glass. Two categories of solar glass are also explicitly excluded based on specific chemical and physical thresholds, reflecting that solar glass competes in a distinct product and policy category from standard architectural or automotive float glass.

The Trade Numbers That Justified the Case

Import data cited in Commerce’s supporting fact sheet shows the scale of what’s at stake. Chinese float glass imports into the US, measured across the relevant tariff classifications, ranged between roughly $119.7 million and $156.1 million annually from 2021 through 2023. Malaysian import values were far smaller in absolute terms but grew far faster proportionally, rising from under $2.9 million in 2021 to over $7 million by 2023, more than doubling in just two years, a growth curve that likely factored into why Malaysia was named alongside China in the same case despite the volume gap.

What Happens Next

With the CVD orders now published, US Customs and Border Protection will begin assessing countervailing duties on unliquidated entries of Chinese and Malaysian float glass retroactive to May 19, 2025, the date Commerce’s preliminary determinations first published, with a carve-out for a roughly four-month window last fall when provisional measures technically lapsed. Commerce has also set up an annual inquiry service list process through its ACCESS electronic filing system, giving interested parties, importers, foreign producers, domestic manufacturers, a formal channel to stay informed of and participate in any future scope rulings or circumvention inquiries tied to these orders.

These orders bring the current US tally of active antidumping and countervailing duty orders to more than 800, spanning industries well beyond glass, but this case adds float glass to a growing list of building material categories where Washington has moved to directly counter what it considers unfairly priced Chinese and Southeast Asian imports.

The Bigger Picture for Global Glass Trade

Taken together with India’s own proposed minimum import price on float glass, this US action suggests a broader pattern is emerging across major glass-importing economies: pushback against the same cluster of exporting nations, principally China, but also Malaysia, Vietnam, Thailand, and Indonesia, whose combined float glass export capacity has outpaced demand growth in their home and traditional export markets for several years running. For glass manufacturers, traders, and distributors watching multiple geographies, the throughline is consistent: the low-cost export model that’s underpinned East and Southeast Asian float glass competitiveness for the past decade is facing coordinated resistance on more than one continent at the same time.

Based on official final determinations, countervailing duty orders, and news releases issued by the U.S. Department of Commerce and the U.S. International Trade Commission. As official US government publications, these documents are in the public domain and not subject to copyright; the analysis and framing above are original.