What the data for this category looks like
Research report data for this category primarily comes from public securities firm research report libraries, specialized chemical industry association reports, and licensed chemical industry news platforms. Update frequency adjusts based on industry trends, policy changes, and spot price volatility, with no fixed cycle. Update frequency increases during major events. Each individual document typically includes sections such as overall industry overview, core raw material production capacity data, spot price trends, downstream demand breakdown, and leading enterprise updates. Some research reports include structured tables with standardized fields: raw material name, spot price (yuan/ton), production capacity (10,000 tons/year), release date, and releasing institution.
What constraints these characteristics impose on HTTP interfaces and external systems
These data characteristics impose three constraints on HTTP interfaces and external systems:
- No fixed update cycle and volatile update frequency during critical events. HTTP interfaces must support on-demand data synchronization to adapt to sudden high-concurrency call scenarios.
- Individual documents contain nested structured tables. Interface parsing modules must support extraction of table content, to avoid losing core fields such as production capacity and price that occur when only plain text is extracted.
- Fields are clearly bound to units. Interface parameters must support unit validation and filtering to prevent mixing of cross-category data, and standardize unit identifiers for returned fields.
How to set configurations
| Configuration Key | Recommended Value | Rationale |
|---|---|---|
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Long documents with multiple modules require sufficient time for parsing to avoid mid-process interruptions |
RECALL_TOP_K | Top 8–12 results | Core information for this category’s research reports is widely distributed. Too few recalls will lose critical data, while too many will increase interface load |
MAX_CONTEXT_LENGTH | 8000–12000 characters | Core arguments and table content from individual research reports are lengthy, requiring adaptation to long context processing requirements |
API_REQUEST_TIMEOUT | 300 seconds | When connecting to multiple data sources, some licensed platform interfaces respond slowly, requiring sufficient request duration |
FIELD_UNIT_VALIDATION | Enabled | Data fields for this category are clearly bound to units. Enabling validation prevents erroneous data with non-standard units from being included |
SYNC_TRIGGER_MODE | On-demand trigger + scheduled fallback | This category’s research reports have no fixed update cycle. On-demand triggering saves resources, while scheduled fallback covers scenarios where updates are not completed in a timely manner |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require individual analysis. It is recommended to test on your own samples before finalizing settings.
Three common mistakes
- External data source interface calls return a
404status code. Cause: API version and path parameters for the corresponding data source are not matched. Some specialized chemical industry news platforms have different interface paths than generic interfaces. Failure to adjust configurations will trigger path not found errors. - Search results include research report content from non-chemical raw material categories. Cause: The
FIELD_UNIT_VALIDATIONconfiguration is not enabled, and no validation is performed on the units of returned fields. This leads to retrieval data from other categories being mixed in. - Core fields are empty after parsing long documents. Cause: The set
MAX_CONTEXT_LENGTHvalue is too small. Table content from long documents is truncated, preventing complete extraction of core fields such as production capacity and price.
How to confirm configurations are properly set
- Initiate a single test call, check if returned results cover preset core business fields, and verify that field units match the general standards for chemical raw material categories.
- Simulate a high-concurrency call scenario, confirm that no timeout errors are triggered by the interface, and verify the rationality of the timeout configuration.
- Enter non-chemical raw material keywords for retrieval, confirm that no research report content from unrelated categories is returned, and verify that the unit validation configuration is active.
- Trigger an on-demand data synchronization task, check whether the task completion duration meets business requirements, and verify the adaptability of the parsing timeout configuration.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.