china-clean-data-xls

china-clean-data-xls

Purpose

Clean and normalize A股财务数据 — prepare raw financial data from 巨潮 filings for modeling and analysis.

Data Sources

Tier 0 — 万得 Wind（最全面付费数据）

• 覆盖：A股/港美股/基金/指数/债券/宏观/研报/分析（44个工具）
• MCP 服务：wind-mcp（需 WIND_API_KEY 密钥，以 ak_ 开头）
• 优势：全市场覆盖面最广、数据最全面、包含研报和量化分析
• 密钥申请：https://aifinmarket.wind.com.cn/#/home

Tier 1 — 同花顺 iFind（付费精确数据）/ AkShare MCP（Tier-2 免费备选）

get_financials(ticker, "income")     → Raw income statement
get_financials(ticker, "balance")    → Raw balance sheet
get_financials(ticker, "cashflow")   → Raw cash flow statement

Secondary Sources

• 巨潮 — original filings (PDF/HTML)
• 审计报告 — audited figures

Workflow

Step 1: Data Extraction

Extract from source documents:

Document	Key Data	Format
资产负债表	Assets, liabilities, equity	千元
利润表	Revenue, expenses, profit	千元
现金流量表	Operating, investing, financing CF	千元
报表附注	Detail breakdowns	Text/number
审计报告	Audit opinion, adjustments	Text

Extraction checklist:

• All periods extracted (typically 3-5 years)
• Quarterly data if needed
• Prior year comparatives
• Notes and footnotes captured

Step 2: Normalize Units

Unit standardization:

Issue	Solution
千元 vs 万元 vs 元	Standardize to 万元
Different report dates	Align to same period-end
Segment data	Map to consistent segments
Currency	All CNY

Unit conversion:

From 千元: divide by 10 → 万元
From 元: divide by 10,000 → 万元
From 亿元: multiply by 10,000 → 万元

Step 3: Handle CAS-Specific Items

CAS vs IFRS mapping:

CAS Line Item	Equivalent	Notes
营业收入	Revenue	Net of VAT
营业成本	COGS	Includes VAT
税金及附加	Tax & surcharges	城建税, 教育费附加
销售费用	SG&A (selling)
管理费用	G&A
研发费用	R&D	Separated from G&A in new CAS
财务费用	Interest & finance costs
投资收益	Investment income	Including 联营/合营
公允价值变动	Fair value change
信用减值损失	Credit impairment	New CAS 22
资产减值损失	Asset impairment
资产处置收益	Asset disposal
营业外收入	Non-operating income	Including 政府补助
营业外支出	Non-operating expense
所得税费用	Income tax
净利润	Net income
归母净利润	Net income to parent	Key metric
扣非净利润	Non-GAAP net income

Step 4: Fix Common Data Issues

Common issues and fixes:

Issue	Detection	Fix
Missing periods	Gap in data	Flag for manual fill
Restated figures	Footnote "重述"	Use most recent restatement
Segment reclassification	Note disclosure	Map to new segments
One-time items	Large/unusual items	Flag for normalization
Related party	关联交易标注	Identify and quantify
Accounting change	Policy change note	Adjust comparables
Error	Doesn't sum	Investigate and correct

Step 5: Revenue Breakdown

Revenue by type:

Type	CAS Line	Notes
主营业务收入	Core revenue	Main business
其他业务收入	Other revenue	Ancillary
合计	Total revenue

Revenue by geography (if disclosed):

Region	Current Year	Prior Year	Growth
国内
海外
合计

Step 6: Expense Normalization

Normalize non-recurring items:

Item	Treatment
资产处置收益/损失	Exclude from operations
政府补助 (non-recurring)	Exclude or note separately
诉讼/罚款	Exclude
减值 (one-time)	Exclude or normalize
并购相关费用	Exclude

Adjusted metrics:

调整后营业收入 = 营业收入 - 其他业务收入
调整后营业成本 = 营业成本 (core only)
调整毛利率 = 调整后毛利 / 调整后收入

Step 7: Balance Sheet Clean-up

Balance sheet mapping:

CAS Item	Modeling Category
货币资金	Cash & equivalents
交易性金融资产	Short-term investments
应收票据	Notes receivable
应收账款	Accounts receivable
预付款项	Prepayments
其他应收款	Other receivables
存货	Inventory
其他流动资产	Other current assets
长期股权投资	Long-term investments
固定资产	PPE
在建工程	Construction in progress
无形资产	Intangibles
商誉	Goodwill
长期待摊费用	Deferred charges
其他非流动资产	Other non-current
短期借款	Short-term debt
应付票据	Notes payable
应付账款	Accounts payable
合同负债	Contract liabilities
应付职工薪酬	Accrued compensation
应交税费	Taxes payable
其他应付款	Other payables
一年内到期非流动负债	Current portion LTD
长期借款	Long-term debt
应付债券	Bonds payable
预计负债	Provisions
递延所得税负债	DTL
其他非流动负债	Other non-current
股本	Share capital
资本公积	Capital reserve
盈余公积	Retained earnings (statutory)
未分配利润	Retained earnings
归属于母公司股东权益	Parent equity
少数股东权益	Minority interest

Step 8: Quality Checks

Data quality checklist:

Check	Pass Criteria
Balance sheet balances	Assets = Liabilities + Equity
Cash flow ties	CF = ending cash - beginning cash
Revenue matches	Cross-check with segment data
Tax reasonable	Tax / pre-tax income ~25%
Depreciation consistent	D&A / PPE stable
Interest matches	Interest / debt reasonable

China-Specific Data Issues

Common Issues

Issue	Example	Fix
单位不一致	Some 千元, some 元	Standardize
会计政策变更	Revenue recognition change	Adjust comparables
报表格式变化	New line items	Map to old format
追溯调整	Prior period restatement	Use restated figures
外币报表	Subsidiary in USD	Convert to CNY

CAS-Specific Treatments

Item	CAS Treatment
研发费用	Must be expensed (not capitalized, generally)
政府补助	总额法 vs 净额法
股份支付	Expensed over vesting period
保险合同	CAS 25 (if applicable)

Quality Checks

Before passing data for modeling:

• All periods complete
• Units standardized
• Balance sheet balances
• Cash flow ties
• CAS items correctly mapped
• Non-recurring items flagged
• Restatements applied
• Quality issues documented

Data Source Mode Switch: Set env var IFIND_DATA_SOURCE_MODE to control data source preference.

• ifind-only (strict): Use iFind only, error if unavailable
• ifind-fallback (default): iFind preferred, fallback to AkShare
• akshare-only: Skip iFind, use AkShare only
• wind-only: Wind only, error if unavailable
• wind-fallback: Wind first, fallback to iFind → AkShare