China is grappling with electricity shortages amid tight coal supplies, tougher emission standards and strong manufacturing demand.

"Companies in Vietnam haven't reported any issues of material shortages," the Ministry of Industry and Trade said on Friday.

But the ministry said demand for imported materials by manufacturers in Vietnam had fallen sharply after coronavirus lockdowns in key industrial provinces over recent months.

The lockdowns have also forced companies in labour-intensive businesses, including suppliers for brands like Nike and Adidas, to suspend operations.

China is Vietnam's largest trading partner and is the key supplier of materials for industries such as the garment and footwear sector.

Vietnam's imports from China in the first eight months of this year rose 47% from a year earlier to $72 billion, according to Vietnam's customs data.

(Editing by Ed Davies)