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The Chinese government is to introduce from next week provisional anti-dumping duties against solar-grade polysilicon imports from the United States and South Korea.

The provisional duties range from 2.4% to 57% and will come into effect from 24 July.

China’s Ministry of Commerce (MOFCOM) said  today that a probe launched last year had concluded that polysilicon imports into China were damaging domestic manufacturers.

Under the provisional levies, US manufacturers will be hit the hardest, with AE Polysilicon hit by a 57% levy and Hemlock Semiconducter and MEMC, the polysilicon arm of SunEdison, receiving levies of 53.3% and 53.7% respectively.

The levies on Korean companies range from 2.4% up to 48.7%.

European polysilicon imports into China are also under investigation but were not mentioned in today’s statement. The EU and China are currently in separate negotiations over duties the European Commission is looking to impose on Chinese solar imports. Last week, German Economy Ministry sources were widely reported stating that China was unlikely to impose duties on European polysilicon manufacturers because of the ongoing negotiations over Chinese imports into the EU.

MOFCOM said stakeholders had 10 days to submit written evidence in response to the provisional duties.