Limu Mine Restart Opens Up Xinjinlu's Growth Space in Tin, Tungsten, Tantalum and Niobium

Overview

This report is an in-depth study of Xinjinlu. It positions the company as a case of transformation from a southwestern chlor-alkali chemicals enterprise to a rare metal mineral resource developer, focusing on the restart progress of its controlling asset Guangxi Limu Mining, the resource endowment of tin, tungsten, tantalum and niobium, the construction of the first-phase mining-beneficiation-smelting project, and future earnings leverage. The report believes that the traditional chlor-alkali business is currently at a cyclical bottom and under pressure, but it can provide a business foundation for the transformation; once Limu Mine restarts, the company is expected to fully benefit from the tight supply-demand balance and higher price center of tin, tungsten, tantalum and niobium.

Core views

The core views are as follows: first, Limu Mine is about to restart after bankruptcy restructuring. By the end of 2025, the first-phase project had been approved and a capital increase and share expansion completed, while a resumption-of-work notice was issued in January 2026, with key milestones landing one after another; second, tin, tungsten, tantalum and niobium are all facing concentrated supply, policy constraints or geopolitical disruptions, while also benefiting from demand from AI servers, semiconductors, defense, new energy and superconductivity, so prices are likely to remain at high or firm levels; third, Xinjinlu's profit leverage in 2026-2028 will mainly come from the mining segment's ramp-up, while the valuation contribution from the chlor-alkali core business is not yet included; fourth, based on a 2027 target P/E of 33x, the report gives a target price of RMB 20.56 and a “Strong Buy” rating.

Analysis framework

The report adopts an analytical framework of "industry supply-demand pattern + company resource endowment + project construction pace + earnings forecast + relative valuation." At the industry level, it breaks down the resource supply, policy disruptions, downstream demand and price trends of tantalum, tin, tungsten and niobium respectively; at the company level, it reviews Xinjinlu's chlor-alkali core business, Limu Mine's equity structure, bankruptcy restructuring history, the construction arrangement of the first-phase mining-beneficiation-smelting project and repurchase clauses; at the valuation level, it uses 2027 as the earnings release anchor and selects China Tungsten Hightech Materials, Xiamen Tungsten, Orient Tantalum Industry and Huaxi Nonferrous as comparables.

Methodology notes

• Valuation MethodRelative Valuation

  P/E valuation

  The report uses 2027 earnings as the valuation anchor, references the 2027 average P/E of peer companies at 29x, and assigns a 33x target P/E in light of Xinjinlu's relatively high projected profit CAGR for 2026-2028.

• Industry AnalysisTight Supply-Demand Balance Analysis

  Rare metal supply-demand framework

  Starting from supply concentration, mine accidents, policy quotas, export controls, restart pace and incremental demand from AI, semiconductors, defense and new energy, the report judges that the price center of tin, tungsten, tantalum and niobium is moving higher.

• Company AnalysisProject Commissioning and Ramp-up Analysis

  Mine restart and ramp-up pace

  Based on the construction periods of the first-phase mining, beneficiation and smelting subprojects and the work-resumption approval, the report projects that Limu Mine will be gradually commissioned by the end of 2026 and will gradually ramp up in 2027-2028, contributing to revenue and profit.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• Xinjinlu (000510.SZ)

  Core coverage target

  Strengths

  Controls Limu Mining and has native multi-metal resources of tin, tungsten, tantalum and niobium; key milestones for the first-phase project are advancing; earnings leverage should be substantial from 2027 onward.

  Weaknesses

  The chlor-alkali core business has been under pressure in recent years, with consecutive losses in 2023-2025; the mining segment is still in the construction and trial-production stage and has not yet formed stable profit contribution.

  Comparison

  The report selects China Tungsten Hightech Materials, Xiamen Tungsten, Orient Tantalum Industry and Huaxi Nonferrous as peers, and believes Xinjinlu's forecast profit growth may be significantly higher than that of the peers.

  Risks

  Project construction, commissioning, ramp-up and extension of the mining license remain uncertain; weaker-than-expected rare metal prices would affect profit realization.

• Guangxi Nonferrous Limu Mining Co., Ltd.

  Core mining asset

  Strengths

  Holds mining rights for multiple metals including tin, tungsten, tantalum, niobium and lead, and historically has had a relatively complete mining-beneficiation-smelting foundation, making the restart cycle shorter than that of a greenfield mine.

  Weaknesses

  The mine has suspended production multiple times and gone through bankruptcy restructuring, so the restart still requires financial, approval, construction and operating capability support.

  Comparison

  It is relatively scarce among domestic mines and is one of the few with native reserves of tin, tungsten, tantalum and niobium.

  Risks

  The extension of the mining license before June 30, 2028 is a critical hard deadline; failure to complete it may trigger a mandatory repurchase clause.

• Chlor-alkali chemicals business

  Existing core business and cash flow base

  Strengths

  Covers an integrated industrial chain including calcium carbide, PVC and caustic soda, and is one of the important chlor-alkali chemical companies in Southwest China.

  Weaknesses

  Low PVC industry prosperity, cost pressure and relatively loose supply-demand conditions continue to weigh on revenue and profit.

  Comparison

  The report does not yet factor in the valuation contribution of the chlor-alkali core business, and the valuation focus shifts to mining assets.

  Risks

  Industry competition, price volatility, high costs and environmental policies may continue to drag on profitability.

• Tin, tungsten, tantalum and niobium rare metals

  Source of Limu Mine products and valuation upside

  Strengths

  Supply is concentrated or constrained, while demand is driven by AI, semiconductors, defense, new energy and superconductivity, providing support for a higher price center.

  Weaknesses

  Some prices have already risen sharply; if supply recovers or demand falls short of expectations, there is a risk of price correction.

  Comparison

  Tin is affected by supply disruptions in Myanmar and Indonesia, tungsten by Chinese quotas and export controls, tantalum by the Rubaya mine accident and AI demand, and niobium by the concentrated supply structure in Brazil and CBMM.

  Risks

  Weaker-than-expected metal prices would directly affect mining segment revenue, gross margin and valuation.

Key data

• Target PriceRMB 20.56Based on a 2027 target P/E of 33x.
• Current PriceRMB 13.82The report states that the stock price was the closing price on May 18, 2026.
• RatingStrong Buy (Initiation)Initiation coverage by Huachuang Securities.
• 2026-2028 Revenue ForecastRMB 1.984/3.433/4.119 billionAs Limu Mine gradually comes onstream, the mining segment's contribution increases significantly.
• 2026-2028 Net Profit ForecastRMB 42/404/576 millionProfit release becomes evident from 2027 onward.
• 2026-2028 EPS ForecastRMB 0.07/0.62/0.89 per shareUsed for valuation calculations.
• Limu Mining Stake51.76%As of the Q1 2026 report, the listed company controlled the asset through Jinlu Asset Management and Guangxi Xinjinlu Mining.
• First-Phase Mining-Beneficiation-Smelting Project Total InvestmentRMB 496 millionProject approval announcement released on December 30, 2025.
• Capital Increase and Share Expansion AmountRMB 235 millionAfter the capital increase by four investors, they together held a 39.11% equity stake in Limu Mining.
• Mining Renovation Scale600,000 tons/yearThe mining subproject is an upgrade-and-renovation project with a two-year construction period.
• First-Phase Beneficiation Scale750,000 tons/year grinding and beneficiation systemThe first phase of the 1.5 million tons/year beneficiation project, with a one-year construction period.
• Tantalum Price ChangeOn May 8, 2026, the domestic spot price of tantalum ingots was RMB 6,250/kg, up about 139% from the 2025 averageThe report attributes the rise to the Rubaya mining-area accident, geopolitical conflict and AI server demand.
• Tin Price ChangeOn May 7, 2026, the domestic tin spot average price was RMB 416,700/ton, a cumulative increase of more than 156% from the late-2022 troughSupported by Myanmar mine bans, stricter regulation in Indonesia and the semiconductor recovery.
• Tungsten Price ChangeOn May 7, 2026, the spot price of Jiangxi tungsten concentrate (65%) was RMB 693,000/tonAlthough it has pulled back from the March 2026 high, it remains at a historically very high level.
• Niobium Supply ConcentrationBrazil accounts for about 93% of global outputCBMM dominates global pricing power, with highly concentrated supply.

Impact & implications

If Limu Mine restarts and ramps up on schedule, Xinjinlu's earnings structure will shift from being dominated by cyclical chlor-alkali products to being led by rare metal mining contributions, and both profit leverage and the valuation framework may be re-rated. At the industry level, the tight supply-demand balance in tin, tungsten, tantalum and niobium reinforces the strategic scarcity of resource assets; at the company level, the restart progress of Limu Mine, the extension of the mining license, persistently high prices and the repurchase clauses for external investors will be key variables for valuation realization.

Risks

• Competition risk in the chlor-alkali industry.
• Investment and operating risks in mining projects.
• Under pessimistic scenarios, prices of tin, tungsten, tantalum and niobium products may fall short of expectations.
• The pace of Limu Mine construction, resumption of work, commissioning and ramp-up may be slower than expected.
• Failure to extend the mining license by the agreed deadline may trigger a mandatory repurchase clause.
• Repurchase arrangements for external investors may create funding pressure or changes in the control structure.
• Profitability in the company's chlor-alkali core business has not yet stabilized, which may affect overall cash flow and financing capacity.

What to watch

• Construction progress of the first-phase mining, beneficiation and smelting subprojects at Limu Mine.
• Whether the beneficiation and smelting systems are commissioned on schedule by the end of 2026.
• The ramp-up pace and actual attributable capacity of Limu Mine in 2027-2028.
• Progress in extending the mining license before June 30, 2028.
• The price trends of tin, tungsten, tantalum and niobium and whether supply-demand disruptions persist.
• The restart of Myanmar tin mines, stricter regulation of tin in Indonesia, geopolitical disruptions in DRC tantalum mines, and changes in China's tungsten mining quotas and export controls.
• The prosperity of the chlor-alkali industry, PVC and caustic soda prices, and the recovery in gross margin in the company's chemicals segment.
• Execution of optional or mandatory repurchase clauses for external investors.