WEEKLY: China's SiMn prices rise further on cost support

China's silicomanganese (SiMn) prices continued to strengthen over March 16-20, mainly due to domestic smelters' increased production costs from the steady rise in prices of manganese ore, Mysteel Global learned.

On March 20, Mysteel assessed the national price of 6517 SiMn at Yuan 6,044/tonne ($875/t) including the 13% VAT, jumping by Yuan 129/t on week and marking the highest since March 17 2025. Prices of the ferroalloy in the derivative market also remained strong last week, with the most-traded SiMn