Trade War: China’s MOFCOM targets Hemlock Semiconductor with polysilicon import duties

Facebook
Twitter
LinkedIn
Reddit
Email

China’s Ministry of Commerce (MOFCOM) has only imposed preliminary anti-subsidy duties on US imported polysilicon from Hemlock Semiconductor and AE Polysilicon.

Other major producers in the US, REC Silicon and SunEdison Semiconductor, formerly MEMC’s polysilicon and wafer operations will not be subjected to a 6.5% duty.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

MOFCOM said in a statement that REC Silicon’s polysilicon imported during the period of investigation would attract a minimal duty of 0.2%, thereafter no duty would be employed.

The majority of REC polysilicon imported into China is FBR-based, shipped in small granular form used primarily as a feedstock supplement in ingot production.

SunEdison primarily uses internal polysilicon production for wafer production and has limited solar-grade polysilicon shipments to China, historically sold on spot markets or in tolling arrangements for wafers/cells and finally into modules to then be used in its PV power plant projects business.

Both REC and SunEdison were said to have not received subsidies after the investigation, suggesting that MOFCOM believed Hemlock Semiconductor and AE Polysilicon had, without furthr details being given.

However, Hemlock Semiconductor has been the largest high-purity producer of polysilicon with major customers in Asia, including China and competes with GCL-Poly directly for business in China.

Hemlock Semiconductor is a not a public listed firm, unlike REC and SunEdison.

China had previously imposed preliminary anti-dumping duties on US and South Korean producers, while excluding the EU after an agreement was made in the PV products trade war between the EU and China.

At the time China had imposed levies between 53 and 57% on US imports and 2.4 to 48.7% on South Korean polysilicon imports, which remain in place. 

Read Next

May 19, 2026
Inox Clean Energy has completed the acquisition of US solar manufacturer Boviet Solar Technology in a deal valued at around US$750 million.
May 19, 2026
NextEra Energy and Dominion Energy have confirmed that they will combine, forming the largest regulated power utility company in the world.
May 19, 2026
Enel Green Power North America has acquired a 270MW operational solar PV portfolio from an unnamed US utility.
May 19, 2026
Toyo Solar has posted a 177% increase in revenues in Q1 2026, after bringing online new cell and module manufacturing facilities.
May 18, 2026
Naqaa Sustainable Energy has signed a power purchase agreement (PPA) for a 2.7GW hybrid renewable energy project in Mahout and Duqm, Oman.
May 18, 2026
The Vietnamese state power utility Vietnam Energy Generation Corporation 1 (EVNGENCO1) has proposed the development of 270MW of floating solar PV capacity on three hydropower reservoirs.

Upcoming Events

Solar Media Events
May 20, 2026
Porto, Portugal
Upcoming Webinars
May 27, 2026
9am BST / 10am CEST
Upcoming Webinars
May 27, 2026
9am BST / 10am CEST
Media Partners, Solar Media Events
June 2, 2026
Johannesburg, South Africa
Media Partners, Solar Media Events
June 3, 2026
National Exhibition and Convention Center (Shanghai)