Core Insights - The price difference between B-type and S-type platinum-rhodium wires is significant, exceeding 100 yuan per gram, primarily due to the differences in platinum and rhodium composition [1][3]. Composition and Application - S-type platinum-rhodium wire has a composition of 10% rhodium and 90% platinum for the positive electrode, and pure platinum for the negative electrode, making it suitable for mid-temperature measurement applications in industries like glass manufacturing and ceramic sintering [3]. - B-type platinum-rhodium wire features a more complex composition with 30% rhodium and 70% platinum for the positive electrode, and a platinum-rhodium alloy (6% rhodium) for the negative electrode, allowing it to perform well in ultra-high temperature environments above 1600℃, making it essential for aerospace and metallurgy industries [3]. Market Pricing - Current market prices indicate that S-type platinum-rhodium wire is valued at 330 yuan per gram, while B-type platinum-rhodium wire reaches 453 yuan per gram, reflecting the direct correlation between material composition and market value [4]. - The higher rhodium content in B-type wire significantly increases its raw material costs, and the production process is more demanding, requiring precise control of rhodium distribution, which further elevates its market price [3].

Group 1 - The price of platinum-rhodium wire has recently surpassed 406 yuan per gram, marking a 12% increase from 360 yuan over the past three months [1][3] - The demand for platinum-rhodium alloys is driven by their essential role in automotive catalytic converters and the glass fiber industry, with increased usage due to stricter emissions standards for fuel vehicles [3][5] - The global supply of rhodium is heavily concentrated in South Africa, where power crises have led to the shutdown of several smelting plants, tightening the supply chain and driving prices up [3][5] Group 2 - The current price of 406 yuan per gram is 35% higher than the same period in 2023, with downstream glass manufacturers just beginning to adjust their purchase prices [5] - Technical analysis indicates that the price is nearing the upper Bollinger Band, suggesting potential volatility ahead [5] - A strategy of selling in three batches is recommended, with the first batch being 30% of the total volume to secure initial profits, while the remaining 70% should be monitored for further price movements [7]