Natural rubber, 20号胶, and butadiene rubber are collectively known in the market as the "three rubber siblings." Although they belong to the same rubber family, distinct differences in raw material sources, supply structures, pricing logic, and downstream demand have led them to follow divergent price trajectories in the summer of 2026. RU and NR are trapped in a tug-of-war between El Niño, seasonal production increases, and weak demand, oscillating within a range. Meanwhile, BR experiences sharp volatility driven by geopolitical conflicts in the Middle East, acting as the "emotional amplifier" of the entire rubber sector. The contradictions among these three siblings reflect a fierce collision of agricultural, industrial, and geopolitical attributes within the same commodity group.

One: The "Resumes" of the Three Siblings: Same Destination, Different Origins

To understand the contradictions among the three siblings, it's essential to clarify their respective origins. RU and NR share the same source, both derived from rubber trees, but RU's deliverable products are primarily full cream latex, making it more influenced by domestic producing area weather and warehouse receipt structures. NR, on the other hand, uses imported standard rubber as its delivery target, is more internationally oriented, and is more deeply affected by supply and demand dynamics in Southeast Asia and exchange rates. BR is a petrochemical product, with its raw material, butadiene, closely linked to crude oil and naphtha prices and constrained by the supply and demand balance of butadiene itself.

Two: Contradiction One: RU and NR - "Range Oscillations Pulled by Weather and Tires"

1. Supply Side: Seasonal Production Increases vs. the "Ceiling" of El Niño. The primary contradiction currently facing RU and NR is the conflict between short-term increases and long-term constraints. Short-term seasonal pressure: In July and August, the main producing regions in Southeast Asia (Thailand, Vietnam, and Indonesia) enter their peak production season, with new rubber being released intensively. As new rubber flows out, China's import volumes rise periodically, and the short-term loose supply suppresses upside price increases. Medium-to-long-term bullish factors: El Niño is the core bullish narrative throughout the year. NOAA data shows a high probability of a strong El Niño, which will continue to curb the potential for annual production increases throughout the year. ANRPC data indicates that the global natural rubber market is expected to face a supply deficit for the sixth consecutive year in 2026, with production estimated at 15.2 million metric tons and consumption at 15.41 million metric tons. Additionally, Southeast Asian producing regions face three long-term constraints: aging rubber trees, stagnation in new planting areas, and an aging labor force. The potential production capacity is declining year by year. Low-price supply elasticity is weak: Rubber farmers and processing plants in China and abroad have suffered deep losses for two consecutive years. Processing profit margins for full cream latex and Thai standard rubber are at historically low levels. Only a significant price increase would substantially stimulate new tapping, and under low prices, supply elasticity is weak, limiting the downside potential for rubber prices. 2. Demand Side: Structural Differentiation in Tires. The core downstream sector for RU and NR is tires, which is undergoing a sharp structural differentiation. All-steel tires (corresponding to RU/NR) show resilience: Demand from heavy trucks and engineering vehicles is stable. From January to June this year, domestic heavy truck sales increased by 22.6% year-on-year, and road freight turnover has steadily improved. The supporting and replacement demand for all-steel tires provides strong support, acting as the most critical rubber demand stabilizer. Semi-steel tires (corresponding to NR/BR) face pressure: The passenger car market performance is weak, with cumulative passenger car sales from January to June decreasing by 6% year-on-year. Affected by EU anti-dumping policies, semi-steel tire operating rates are significantly lower than last year, putting pressure on product inventory. As of the end of July, the operating rate of semi-steel tire sample factories was around 64%, remaining negative year-on-year. 3. Inventory: Slowing destocking, unchanged loose supply and demand expectations. As of July 25, China's natural rubber social inventory was 1.197 million metric tons, down 1.1% month-on-month, indicating a slow pace of destocking. By the end of July, the total natural rubber inventory in the Qingdao area was approximately 668,100 metric tons, with the pace of destocking slowing noticeably. Summary: The core contradiction for RU and NR lies in the tug-of-war between short-term seasonal production increases and the long-term expectation of production cuts due to El Niño, combined with the structural differentiation of downstream tire demand. The current market is in a seasonally sluggish period, with no prominent fundamental contradictions and no significant price drivers. RU and NR maintain a range oscillation pattern.

Three: Contradiction Two: BR - "Geopolitics as the Emotional Amplifier"

If RU and NR are relatively mild in their "range oscillations," then BR is the "hot-tempered" one among the three siblings. 1. Cost-Driven: The "Emotional Amplifier" of Geopolitics. The core contradiction for BR is that its petrochemical attributes amplify the impact of geopolitics. The raw material, butadiene, is highly correlated with crude oil, and any minor disturbance in the Middle East situation quickly transmits to the BR market. In early to mid-July: Geopolitical tensions in the Middle East escalated (blockade of the Strait of Hormuz, tensions between the US and Iran), causing BR to follow crude oil and the petrochemical sector in a sharp rise, with the main contract oscillating at high levels above 13,700 yuan per metric ton. In late July: The geopolitical situation reversed, international oil prices corrected, and the BR market fell sharply. On July 29, the main BR contract closed near 13,100 yuan per metric ton, a significant decline from the earlier high. Currently, the primary driver for BR remains geopolitics, which carries significant uncertainty. Chasing prices on a single direction requires careful risk management. 2. Own Supply and Demand: Butadiene supply recovery, butadiene rubber inventory accumulation. Butadiene supply rebounded: In late July, butadiene facilities in the northwest, central, and southern regions are expected to gradually restart, with ample external sales resources in the market. Butadiene port inventory increased sharply from 27,100 metric tons in mid-July to 37,400 metric tons on July 22, a month-on-month increase of 38%. Butadiene rubber inventory accumulation: Butadiene rubber inventories at both factories and traders increased, with trader inventories rising 19.1% month-on-month. Production margins narrowed: The price spread between butadiene and butadiene rubber gradually narrowed, but production still maintained marginal profitability, supporting some enterprises to continue procurement and operations. 3. Structural Change: China's butadiene rubber turns net exporter within the year. In June 2026, China's butadiene rubber imports were 14,919 metric tons, while exports were 48,212 metric tons, a year-on-year surge of 62.1%. The country has turned from a net importer to a net exporter within the year. This indicates that the international competitiveness of China's butadiene rubber is improving, but it also means that domestic supply pressure is being released through export channels, providing limited support for domestic prices.

Four: The Panorama of "Contradictions" of the Three Siblings: Three Attributes, Three Fates

Five: Summary

The contradictions among the three rubber siblings are essentially a "three-body problem." RU, NR, and BR are driven by three distinct forces: agricultural attributes, industrial raw material attributes, and petrochemical attributes. The rhythms and directions of these three driving forces often do not align, making it difficult for the price trends of the three siblings to form a consensus. For RU and NR: Patiently wait for the right-side opportunity when El Niño and peak-season demand resonate. For BR: Respect the uncertainty of geopolitics, control position sizes, follow the trend, but avoid chasing gains or losses. For traders, understanding the root causes of the contradictions among the three siblings is more valuable than guessing short-term price movements. In a landscape of product differentiation, precisely grasping structural opportunities is key to holding a firm position in a volatile market.