According to Zhitong Finance APP, GF Securities issued a research report stating that from September 4-5, Jizhong New Materials, Weibo New Materials, Shandong Glass Fiber, and Sanlei Glass Fiber successively released price adjustment notices, raising prices of direct yarn, sheet yarn, chopped strand mat yarn and other products by 5%-10%. The reason cited was persistent losses due to factors such as China-US tariffs. This price adjustment marks the initial effectiveness of glass fiber industry self-discipline, with involution conditions somewhat alleviated, and the profitability center of the glass fiber industry expected to continue improving in the future.

Regarding glass fiber/carbon-based composites, according to JLC Network, as of September 4, 2025, the mainstream quotation for electronic yarn G75 was 8,300-9,200 yuan/ton, remaining flat compared to the previous week's average, while high-end E and D series products and low dielectric products maintained high market transaction prices.

**Glass Fiber Companies Raise Prices, Industry Self-Discipline Shows Initial Results**

In December 2024, the China Glass Fiber Industry Association's Fifth Board of Directors' Seventh Council Meeting reviewed and approved the "China Glass Fiber and Products Industry Self-Discipline Convention," which was officially released and implemented on December 25, 2024. Industry backbone enterprises actively responded to industry self-discipline management work and joined the self-discipline convention. As of September 4, 2025, a total of 9 industry backbone enterprises joined in the first batch, including China Jushi, Taishan Glass Fiber, Chongqing International Composites, Shandong Glass Fiber, Changhai Co., Jizhong New Materials, Weibo New Materials, Sanlei Glass Fiber, and Tianhao Glass Fiber.

From September 4-5, Jizhong New Materials, Weibo New Materials, Shandong Glass Fiber, and Sanlei Glass Fiber successively released price adjustment notices, raising prices of direct yarn, sheet yarn, chopped strand mat yarn and other products by 5%-10%, citing persistent losses due to factors such as China-US tariffs. This price adjustment marks the initial effectiveness of glass fiber industry self-discipline, with involution conditions somewhat alleviated, and the profitability center of the glass fiber industry expected to continue improving.

**Consumer Building Materials: High Second-Hand Housing Activity Combined with Subsidy Policies, Retail Building Materials Recovery Leads, Leading Companies Show Strong Operational Resilience**

Consumer building materials have good long-term demand stability, continuously improving industry concentration, and excellent competitive landscape. Quality leaders still have significant medium-to-long-term growth potential. The downstream real estate market is still seeking bottom, awaiting sales stabilization and improvement. Core leading companies demonstrate strong operational resilience. The firm is optimistic about Sankeshu (603737.SH), Tubao (002043.SZ), BNBM (000786.SZ), Weixing New Materials (002372.SZ), Oriental Yuhong (002271.SZ), China Lesso (02128), Dongpeng Holdings (003012.SZ), and follows Kinlong Hardware (002791.SZ), Arrow Home (001322.SZ), Monalisa (002918.SZ), Keshun Waterproof (300737.SZ), Zhite New Materials (300986.SZ), and Wangli Security (605268.SH).

**Cement: National Cement Market Prices Declined 0.5% Week-over-Week**

According to Digital Cement Network, as of September 5, the national average cement price was 343 yuan/ton, down 1.67 yuan/ton week-over-week and 40 yuan/ton year-over-year. National cement shipment rate was 45.73%, up 0.13 percentage points week-over-week and up 5.27 percentage points year-over-year. As cement prices in some regions continue to adjust downward to bottom ranges, cement prices are expected to maintain minor fluctuating adjustments going forward. Currently, industry valuations are in historical bottom ranges. The firm is optimistic about CONCH CEMENT (600585.SH, 00914) and HUAXIN CEMENT (600801.SH, 06655), and follows CR Building Materials Technology (01313), Shangfeng Cement (000672.SZ), and Tapai Group (002233.SZ).

**Glass: Float Glass Trading Weakens; Photovoltaic Glass New Order Prices Rise**

According to JLC Network, as of September 4, domestic float glass average price was 1,190 yuan/ton, down 0.1% week-over-week and down 10.6% year-over-year, with inventory days at approximately 27.64 days, up 0.09 days from last Thursday. 2.0mm coated panel mainstream order prices were around 13 yuan/square meter, up 18.18% week-over-week, with sample inventory days at approximately 18.35 days, down 6.80% week-over-week. Current glass leader valuations are relatively low. The firm is optimistic about Kibing Group (601636.SH), Shandong Pharmaceutical Glass (600529.SH), Flat Glass (601865.SH), Flat Glass (06865), Xinyi Glass (00868), Xinyi Solar (00968), and follows Jinjing Technology (600586.SH) and Linuo Paradigma (301188.SZ).

**Glass Fiber/Carbon-Based Composites: Roving Market Prices Stable with Slight Increases, Electronic Yarn Prices May See Structural Increases**

According to JLC Network, as of September 4, 2025, domestic 2400tex winding direct yarn average prices ranged from 3,100-3,700 yuan/ton, remaining flat week-over-week but down 4.25% year-over-year. Electronic yarn G75 mainstream quotations were 8,300-9,200 yuan/ton, flat compared to the previous week's average, while high-end E and D series products and low dielectric products maintained high market transaction prices. Glass fiber/carbon-based composite material leading companies maintain clear advantages. The firm is optimistic about China Jushi (600176.SH), SINOMA Science & Technology (002080.SZ), and Changhai Co. (300196.SZ), and follows Golden Bo Co. (688598.SH).

**Risk Warnings** Risks include continued macroeconomic downturn, significant policy fluctuations in monetary and real estate sectors, industry new capacity additions exceeding expectations, and excessively rapid raw material cost increases.