Valuation Analysis Framework and Key Elements of Quartz Mines

Based on my search results,

. It should be noted that Xinsheng Technology (Zhejiang Xinsheng Technology Co., Ltd., stock code 874573) is a company mainly engaged in sewing machinery manufacturing, and its business scope does not involve quartz mining [0].

Although specific information about the case you inquired about cannot be obtained, I can introduce the

, which will help you understand the evaluation methods for similar investments:

• Proven Reserves
  : Mineral resources confirmed through exploration projects
• Measured Resources
  : Resources with a high degree of geological control
• Inferred Resources
  : Resources based on geological inference

• Theoretical Mining Period
  = Mineable Reserves ÷ Annual Mining Volume
• Actual Mining Period
  needs to consider factors such as ore grade, mining conditions, ore dressing recovery rate, etc.

• Income Approach (DCF)
  : Based on discounted future cash flows
• Market Approach
  : Refer to comparable transaction cases
• Cost Approach
  : Based on exploration costs and replacement costs

Indicator	Description	Reference Range
Resource Reserves	Total ore quantity (10,000 tons)	Varies by deposit scale
Average Ore Grade	SiO₂ content (%)	High-purity quartz >99.99%
Ore Dressing Recovery Rate	Concentrate yield (%)	60%-85%
Production Cost	Cost per ton of ore (CNY/ton)	Varies by mining conditions
Product Selling Price	Quartz sand price (CNY/ton)	High-purity quartz can reach tens of thousands of CNY per ton

If a quartz mine indeed has a

, it usually indicates:

1. Large reserve scale
   and
   stable ore grade
2. Mine service life
   complies with general mine design specifications (usually 20-30 years)
3. Annual mining volume
   = Total reserves ÷ 24.2 years
4. Valuation should fully consider
   long-term operational risks
   and
   market change factors

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[0] Basic Information of Zhejiang Xinsheng Technology Co., Ltd. - Eastmoney.com New Third Board F10. (https://xinsanban.eastmoney.com/f10/874573.html)

If you can provide a more specific information source (such as an announcement, research report, or news link), I will be able to conduct a more precise analysis. Alternatively, if you want to understand the valuation logic of other specific quartz mine projects, I am also happy to further search and analyze for you.