1. Report Industry Investment Rating - The mid - term outlook for the black building materials industry is mainly "oscillating", with glass and soda ash having a "weak - oscillating" outlook [6][7][10][11][12][14]. 2. Core View of the Report - Overall, the black - building materials market is in a state of oscillation. Although the previous price decline has accumulated strong momentum, and there was a large - scale rebound after macro - positive and coking coal news, the approaching off - season in the domestic construction and manufacturing industries, combined with factors such as increased iron ore shipments and unimproved fundamentals of coking coal and coke, have led to the price returning to a weak state [6]. 3. Summary by Relevant Catalog Iron Element - Overseas mines are increasing shipments at the end of the fiscal year and quarter, with shipments expected to remain high until early July. Steel enterprises' profitability is stable, and hot metal production has slightly decreased but is expected to remain high in the short term. The supply - demand balance is tight, with limited short - term inventory accumulation pressure. There may be a slight increase in port inventory at the end of the month, but the overall supply - demand contradiction is not prominent. The short - term fundamentals are healthy, and the iron ore price is expected to oscillate [2][7]. Carbon Element - Some coal mines have slightly reduced production due to factors such as changing working faces, inventory pressure, and safety, but most coal mines are operating normally, and coking coal production remains relatively high. Mongolian coal transactions are limited, and port inventory is accumulating. On the demand side, coke production has started to decline, and coke enterprises' inventory pressure is increasing, with shrinking coking profits. During the price - cut period, coke enterprises' enthusiasm for replenishing raw material inventory has decreased, and the upstream inventory pressure of coking coal has increased. The supply contraction of coking coal is limited, and there is no driving force for a trend - like price increase [3]. Alloys - **Silicon Manganese**: The cost side is under pressure as manganese ore prices may decline. The supply in some regions has slightly increased, but due to cost inversion, manufacturers' willingness to sell is low. The demand is weak as the black market enters the off - season, and downstream buyers are pressing for lower prices. The supply - demand relationship is becoming looser, and the short - term disk is expected to oscillate [3][5][14]. - **Silicon Iron**: Supply has slightly increased, and the terminal steel - using industry is about to enter the off - season. Downstream enterprises have a strong willingness to reduce inventory, and the market sentiment is cautious. The cost may still have a negative impact. The short - term disk is expected to be under pressure and oscillate, and future steel procurement and production conditions should be monitored [5][14]. Glass - In the off - season, demand is declining, and the deep - processing demand is still weak compared to the same period last year, leading to a decline in spot prices. On the supply side, there are expectations of both cold - repair and ignition, and there are 6 production lines waiting to produce glass, so supply pressure remains. The upstream inventory has increased significantly, while the mid - stream inventory has decreased. There are rumors in the supply side, but the actual impact is limited. Coal prices are also expected to decline, and market sentiment fluctuates. The disk price is lower than the spot price, but the price cut of Hubei's spot glass has led the disk price to decline. The short - term view is weak - oscillating [5]. Soda Ash - The supply surplus pattern remains unchanged, and the resumption of maintenance has increased supply. In the short term, it is expected to oscillate weakly, and in the long term, the price center will continue to decline [5][12]. Other Products - **Steel**: The domestic policy is in a vacuum period after the Sino - US talks. The demand for the five major steel products has weakened this week, and the supply has not decreased significantly, but hot metal production may have peaked. The inventory is still decreasing, and the main factors suppressing the disk price are the decline in raw material prices and the pessimistic expectation of domestic demand. The short - term steel price is expected to oscillate [7]. - **Scrap Steel**: As the building materials off - season deepens, the apparent demand for rebar has decreased. The market is pessimistic about off - season demand, and the finished product disk price is under pressure. The supply of scrap steel has decreased this week, which supports the price. The demand has slightly increased overall, but the inventory in steel mills has decreased due to a significant drop in arrivals. The scrap steel price is expected to oscillate following the finished product price [7]. - **Coke**: After the third price cut, the terminal steel - using demand is in the off - season, and the market is pessimistic. There is an expectation of further price cuts. The supply has slightly decreased in some regions, but overall production is stable, and the inventory of coke enterprises is accumulating. The demand is weakening as hot metal production declines. The price is under downward pressure due to weak demand support and cost drag [7][9][10]. - **Coking Coal**: The market transaction price has continued to decline. Some coal mines have reduced production, but the overall supply is still abundant. The demand for coking coal is declining as coke production weakens. The upstream inventory pressure has increased during the price - cut period. The short - term price lacks the driving force for a trend - like increase and is expected to be weak [7][11].