市场相对谨慎，黑色震荡偏弱

Report Industry Investment Rating There is no specific investment rating provided in the report. Core Views - The market is relatively cautious, with black commodities showing a weak and volatile trend. Glass and soda ash are fluctuating, while silicon manganese and silicon iron are also in a volatile state [1][3]. - For glass, although the futures market showed a slightly stronger trend and spot market transactions improved, due to insufficient demand recovery in the real - estate and deep - processing industries, there is significant inventory accumulation and high pressure to reduce inventory. For soda ash, production has declined due to increased plant maintenance, but supply remains loose, and demand growth is limited [1]. - In the case of silicon manganese, production has decreased to a low level in recent years, demand has weakened, and high inventory and registered warrants are suppressing prices, although manganese ore cost provides some support. For silicon iron, production is at a medium - low level, demand is weakening, inventory is being depleted, and short - term prices are affected by cost factors [3]. Summary by Relevant Content Glass and Soda Ash - Market Analysis - Glass futures showed a slightly stronger trend, and spot market transactions improved with better downstream purchasing sentiment. Soda ash futures had a narrow - range fluctuation, and the spot market demand was average, mainly for rigid needs [1]. - Supply - Demand and Logic - Glass production has been declining, but due to insufficient demand recovery in real - estate and deep - processing, inventory accumulation is obvious, and there is high pressure to reduce inventory. The upcoming high - temperature and rainy season is unfavorable for glass storage, increasing the intention of enterprises to reduce prices and inventory. Soda ash production has decreased due to increased plant maintenance, but supply remains loose. The slowdown in photovoltaic growth limits the increase in demand, and there is still significant pressure to reduce inventory [1]. - Strategy - Glass is expected to be volatile, while soda ash is expected to be weakly volatile. There are no specific strategies for inter - period or inter - commodity trading [2]. Silicon Manganese and Silicon Iron - Market Analysis - Silicon manganese futures showed greater fluctuations, and the overall market was volatile. The final price of mainstream steel tenders has not been determined. Production has decreased to a low level in recent years, demand has weakened, and high inventory and registered warrants are suppressing prices, but manganese ore cost provides support. Silicon iron futures were volatile, with a reduction of 11,000 lots in positions. The spot market was weak, with cautious operations and little change in transaction prices. Production is at a medium - low level, demand is weakening, inventory is being depleted, and short - term prices are affected by cost factors [3]. - Strategy - For silicon manganese, near - month contracts are suppressed by warrants, and attention should be paid to the opportunity for a low - level rebound in far - month contracts. Silicon iron is expected to be volatile [4].