# HiQLCD 1.2.0 ## Overview | Item | Content | | ------------------- | ---------------------- | | Database | HiQLCD | | Database identifier | `hiqlcd` | | Version | `1.2.0` | | Release date | 2025-02 | | Data status | Published | | System model | CUT_OFF、CONSEQUENTIAL | | Data provider | Not recorded | ## What's new HiQLCD 1.2.0 contains 31,381 datasets (CUT_OFF), a net increase of 13 over 1.1.0. Its main changes are to names, descriptions, classifications and reference-product information; 19,454 shared datasets have revisions to selected metadata fields. - [Steel](/en/sectors/steel): Revises selected metadata fields in 5,345 retained datasets, with representative reference products 钢坯, 碳钢; 热处理宽厚板, 304不锈钢; 中厚板, 碳钢; 冷硬卷, 碳钢; 中厚板, 304不锈钢. - [Chemicals](/en/sectors/chemicals): Revises selected metadata fields in 4,448 retained datasets, with representative reference products 液压油; 缓蚀阻垢剂; 润滑脂; 甲醇; 乙二醇. - [Electrical Equipment](/en/sectors/electrical-equipment): Revises selected metadata fields in 1,058 retained datasets, with representative reference products 电缆; 滑触线; 干式变压器; 异步电机; 低压成套开关设备. - [Oil & Gas and Products](/en/sectors/oil-gas-and-products): Adds 98 datasets, with representative reference products 原油; 天然气，高压. Comparison: 1.1.0 to 1.2.0, CUT_OFF. Source: [Sources](#sources). ### Official release notes Translated from the official Chinese release notes. - Improves metadata across all datasets, adds fields, standardizes terminology and corrects errors. - Consolidates and restructures selected datasets. Source: [Official release notes at carbonx.hiqlcd.com](https://carbonx.hiqlcd.com/databases/hiqlcd/) ## Changes The baseline is 1.1.0 to 1.2.0. CUT_OFF rises from 31,368 to 31,381 datasets (0.04%), with 30,038 shared by both versions. ### Dataset counts | System model | Dataset count (Dataset ID) | | ------------- | -------------------------: | | CUT_OFF | 31,381 | | CONSEQUENTIAL | 29,746 | Browse by sector: [Sector index](/en/sectors) ### Dataset IDs (1.1.0 → 1.2.0) | System model | In both | Only in 1.2.0 | Only in 1.1.0 | | ------------- | -----------: | ----------------: | ----------------: | | CUT_OFF | 30,038 | 1,343 | 1,330 | | CONSEQUENTIAL | 29,664 | 82 | 35 | Source: [ID Correspondence](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261106T193638Z.xlsx) Model totals: [1.1.0](/en/releases/hiqlcd/1.1.0#dataset-counts) / [1.2.0](#dataset-counts) ### Coverage changes CUT_OFF contains 1,346 activities and 856 reference products across 393 geography codes. Among shared datasets, revisions cover 13,072 names, 8,127 descriptions, 865 classifications and 310 reference-flow assignments; 684 datasets have revisions to core inventory fields. #### Geographic distribution | Geographies (union of the top 10 per model) | CUT_OFF | CONSEQUENTIAL | | ---------------------------------------------- | ------: | ------------: | | CN · China | 2,420 | 2,300 | | CN-XJ · China,Xinjiang Uygur Autonomous Region | 909 | 859 | | CN-SX · China,Shanxi | 892 | 872 | | CN-HI · China,Hainan | 890 | 839 | | CN-HE · China,Hebei | 874 | 852 | | CN-NM · China,Inner Mongolia Autonomous Region | 864 | 847 | | CN-SC · China,Sichuan | 864 | 846 | | CN-SD · China,Shandong | 862 | 845 | | CN-GD · China,Guangdong | 863 | 836 | | CN-JL · China,Jilin | 861 | 839 | | CN-LN · China,Liaoning | 861 | 846 | | CN-HN · China,Hunan | 857 | 839 | Source: [Database Overview](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_Database_Overview_v1.2.0_r20261106T193638Z.xlsx) #### New dataset geographies (1.1.0 → 1.2.0) | System model | Status | Geography (top 10 per model) | Datasets | | ------------- | ----------------- | ---------------------------- | -------: | | CUT_OFF | Only in 1.2.0 | CN-HI | 42 | | CUT_OFF | Only in 1.2.0 | CN-XJ | 42 | | CUT_OFF | Only in 1.2.0 | CN-GD | 17 | | CUT_OFF | Only in 1.2.0 | CN-BJ | 14 | | CUT_OFF | Only in 1.2.0 | CN-Central | 14 | | CUT_OFF | Only in 1.2.0 | CN-East | 14 | | CUT_OFF | Only in 1.2.0 | CN-North | 14 | | CUT_OFF | Only in 1.2.0 | CN-Northeast | 14 | | CUT_OFF | Only in 1.2.0 | CN-Northwest | 14 | | CUT_OFF | Only in 1.2.0 | CN-SH | 14 | | CONSEQUENTIAL | Only in 1.2.0 | CN | 20 | | CONSEQUENTIAL | Only in 1.2.0 | CN-AH | 2 | | CONSEQUENTIAL | Only in 1.2.0 | CN-BJ | 2 | | CONSEQUENTIAL | Only in 1.2.0 | CN-CQ | 2 | | CONSEQUENTIAL | Only in 1.2.0 | CN-FJ | 2 | | CONSEQUENTIAL | Only in 1.2.0 | CN-GD | 2 | | CONSEQUENTIAL | Only in 1.2.0 | CN-GS | 2 | | CONSEQUENTIAL | Only in 1.2.0 | CN-GX | 2 | | CONSEQUENTIAL | Only in 1.2.0 | CN-GZ | 2 | | CONSEQUENTIAL | Only in 1.2.0 | CN-HA | 2 | #### New reference products (1.1.0 → 1.2.0) | Sector | System model | Union of new product UUIDs across the database | References | | ----------------- | ----------------------- | ---------------------------------------------: | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Core Materials | CUT_OFF / CONSEQUENTIAL | 7 | [Source product fields](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261106T193638Z.xlsx) / [Product changes within this sector](/en/sectors/core-materials#new-reference-products) | | Steel | CUT_OFF / CONSEQUENTIAL | 7 | [Source product fields](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261106T193638Z.xlsx) / [Product changes within this sector](/en/sectors/steel#new-reference-products) | | Waste Treatment | CUT_OFF | 5 | [Source product fields](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261106T193638Z.xlsx) / [Product changes within this sector](/en/sectors/waste-treatment#new-reference-products) | | General | CUT_OFF | 2 | [Source product fields](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261106T193638Z.xlsx) / [Product changes within this sector](/en/sectors/general#new-reference-products) | | Basic Energy | CUT_OFF / CONSEQUENTIAL | 2 | [Source product fields](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261106T193638Z.xlsx) / [Product changes within this sector](/en/sectors/basic-energy#new-reference-products) | | Electric Power | CUT_OFF / CONSEQUENTIAL | 2 | [Source product fields](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261106T193638Z.xlsx) / [Product changes within this sector](/en/sectors/electric-power#new-reference-products) | | Chemical Industry | CUT_OFF / CONSEQUENTIAL | 2 | [Source product fields](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261106T193638Z.xlsx) / [Product changes within this sector](/en/sectors/chemical-industry#new-reference-products) | | Chemicals | CUT_OFF / CONSEQUENTIAL | 2 | [Source product fields](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261106T193638Z.xlsx) / [Product changes within this sector](/en/sectors/chemicals#new-reference-products) | | Waste Disposal | CUT_OFF | 2 | [Source product fields](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261106T193638Z.xlsx) / [Product changes within this sector](/en/sectors/waste-disposal#new-reference-products) | Basis: the union of database-wide new Product UUIDs across comparable models, grouped by sector. Sector pages retain the within-sector set differences and names. ### Data quality and documentation | CUT_OFF documentation coverage / datasets | 1.1.0 | 1.2.0 | | --- | --- | --- | | Datasets with data quality scores | 0 / 31,368 (0.00%) | 0 / 31,381 (0.00%) | | Process documents with an overall quality score | 0 / 31,368 (0.00%) | 0 / 31,381 (0.00%) | | Datasets with technology descriptions | 16,712 / 31,368 (53.28%) | 17,310 / 31,381 (55.16%) | ### Impact assessment The published method catalog retains 1,920 category-indicator entries. The catalog with characterization factors contains 44 methods and 762 category indicators, with 228,036 characterization-factor records. These records remain unchanged from 1.1.0 over the fields checked. #### Impact assessment methods | Impact assessment method (version catalog) | Impact categories (distinct UUIDs) | Category indicator entries (complete Method IDs) | Method UUID status | | ------------------------------------------ | ---------------------------------: | -----------------------------------------------: | ------------------ | | CML v4.8 2016 | 11 | 11 | Retained | | CML v4.8 2016 no LT | 11 | 11 | Retained | | Crustal Scarcity Indicator 2020 | 1 | 1 | Retained | | Cumulative Energy Demand (CED) | 12 | 12 | Retained | | Cumulative Exergy Demand (CExD) | 14 | 14 | Retained | | EDIP 2003 | 10 | 47 | Retained | | EDIP 2003 no LT | 10 | 47 | Retained | | EF v3.0 | 28 | 28 | Retained | | EF v3.0 EN15804 | 20 | 20 | Retained | | EF v3.0 no LT | 28 | 28 | Retained | | EF v3.1 | 25 | 25 | Retained | | EF v3.1 EN15804 | 20 | 20 | Retained | | EF v3.1 no LT | 25 | 25 | Retained | | EN15804 | 1 | 14 | Retained | | EPS 2020d | 7 | 7 | Retained | | EPS 2020d no LT | 7 | 7 | Retained | | Ecological Footprint | 4 | 4 | Retained | | Ecological Scarcity 2021 | 12 | 20 | Retained | | Ecological Scarcity 2021 no LT | 12 | 20 | Retained | | Ecosystem Damage Potential | 3 | 3 | Retained | | IMPACT 2002+ (Endpoint) | 4 | 16 | Retained | | IMPACT 2002+ (Midpoint) | 1 | 2 | Retained | | IPCC 2013 | 1 | 4 | Retained | | IPCC 2013 no LT | 1 | 4 | Retained | | IPCC 2021 | 8 | 32 | Retained | | IPCC 2021 no LT | 8 | 32 | Retained | | ReCiPe 2016 v1.03, endpoint (E) | 7 | 26 | Retained | | ReCiPe 2016 v1.03, endpoint (E) no LT | 6 | 25 | Retained | | ReCiPe 2016 v1.03, endpoint (H) | 6 | 25 | Retained | | ReCiPe 2016 v1.03, endpoint (H) no LT | 6 | 25 | Retained | | ReCiPe 2016 v1.03, endpoint (I) | 6 | 24 | Retained | | ReCiPe 2016 v1.03, endpoint (I) no LT | 6 | 24 | Retained | | ReCiPe 2016 v1.03, midpoint (E) | 18 | 18 | Retained | | ReCiPe 2016 v1.03, midpoint (E) no LT | 18 | 18 | Retained | | ReCiPe 2016 v1.03, midpoint (H) | 18 | 18 | Retained | | ReCiPe 2016 v1.03, midpoint (H) no LT | 18 | 18 | Retained | | ReCiPe 2016 v1.03, midpoint (I) | 18 | 18 | Retained | | ReCiPe 2016 v1.03, midpoint (I) no LT | 18 | 18 | Retained | | TRACI v2.1 | 9 | 9 | Retained | | TRACI v2.1 no LT | 9 | 9 | Retained | | USEtox | 2 | 4 | Retained | | USEtox no LT | 2 | 4 | Retained | | selected LCI results | 4 | 8 | Retained | | selected LCI results, additional | 5 | 20 | Retained | Source: [Database Overview：LCIA Methods / Impact Categories](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_Database_Overview_v1.2.0_r20261106T193638Z.xlsx) #### Method catalog changes (1.1.0 → 1.2.0) | Catalog object | 1.1.0 | 1.2.0 | Added catalog IDs | Removed catalog IDs | Retained catalog IDs | | ----------------------------------------------------- | ----: | ----: | ----------------: | ------------------: | -------------------: | | Impact assessment method UUID | 106 | 106 | 0 | 0 | 106 | | Category indicator catalog Method ID (original value) | 1,920 | 1,920 | 0 | 0 | 1,920 | ### Result changes The IPCC 2021 / climate change / GWP100 comparison covers 30,038 shared CUT_OFF datasets from 1.1.0 to 1.2.0. Relative difference is abs(new−old) / max(abs(new), abs(old)); selection thresholds use the maximum absolute indicator value over all shared datasets in both versions. | Row-peak multiplier | Selected datasets | Relative difference P50 | P90 | P99 | Selected datasets with relative difference >10% | | --- | --- | --- | --- | --- | --- | | 1e-12 | 29,831 | 0.00180% | 2.85040% | 23.34241% | 1,694 | | 1e-9 | 9,060 | 0.00155% | 10.29206% | 23.51832% | 934 | Use the ID correspondence to locate datasets during migration, and reassess the model with the selected version. ## Files Attachment revision: 20261107T020200Z | Files | Scope | Format | bytes | System model | SHA-256 | | --- | --- | --- | ---: | --- | --- | | [hiqlcd_Database_Overview_v1.2.0_r20261107T020200Z.xlsx](/files/hiqlcd/1.2.0/revisions/20261107T020200Z/hiqlcd_Database_Overview_v1.2.0_r20261107T020200Z.xlsx) | Catalogs of datasets, reference products, geographies, flows and impact assessment methods. | XLSX | 4870903 | CUT_OFF, CONSEQUENTIAL | b063bec1330de3911a3e47a5071938568417a2141048f231ae3c7847acf0f674 | | [hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261107T020200Z.xlsx](/files/hiqlcd/1.2.0/revisions/20261107T020200Z/hiqlcd_ID_Correspondence_v1.1.0-v1.2.0_r20261107T020200Z.xlsx) | Dataset ID correspondence between adjacent versions. (1.1.0 → 1.2.0) | XLSX | 8127381 | CUT_OFF, CONSEQUENTIAL | 4c842518f313b414b7ef08b4d1a5b5420c482f4380837b440ee1d047517da39a | | [hiqlcd_Change_Annex_Metadata_v1.1.0-v1.2.0_r20261107T020200Z.xlsx](/files/hiqlcd/1.2.0/revisions/20261107T020200Z/hiqlcd_Change_Annex_Metadata_v1.1.0-v1.2.0_r20261107T020200Z.xlsx) | Metadata changes in dataset, flow and LCIA catalogs. (1.1.0 → 1.2.0) | XLSX | 4323654 | CUT_OFF, CONSEQUENTIAL | 2d8bb51fed6da0fbf9dab52d1281b43ba38d812a548eedc01b4991385ecb42a4 | [File definitions](/en/resources/file-definitions) ## Known issues and limitations Sector tags overlap. Inventory revisions are counted by changes in core inventory fields; metadata revisions are counted separately. ### Confirmed issues No formal issue register has been obtained. ### Documentation completeness (r1 field coverage) Data quality scores and overall quality scores are counted from their respective populated fields. Pending documentation: merge, split and replacement mappings for consolidated entries, and a reconciliation between official historical totals and the current published catalog. | Worksheet | Field | Rows with missing values or components | Total rows | | ---------------------- | ---------------------------------------- | -------------------------------------: | ---------: | | Cut-Off AO | Technology Level | 31,381 | 31,381 | | Cut-Off AO | Product Classification | 31,381 | 31,381 | | Cut-Off AO | Product Information | 31,381 | 31,381 | | Cut-Off AO | CAS Number | 31,349 | 31,381 | | Cut-Off AO | Cut-Off Classification | 31,381 | 31,381 | | Consequential AO | Time Period | 1 | 29,746 | | Consequential AO | Technology Level | 29,746 | 29,746 | | Consequential AO | Product Classification | 29,746 | 29,746 | | Consequential AO | Product Information | 29,746 | 29,746 | | Consequential AO | CAS Number | 29,713 | 29,746 | | Consequential AO | Cut-Off Classification | 29,746 | 29,746 | | Geographies | Latitude | 15 | 393 | | Geographies | Longitude | 15 | 393 | | Geographies | Geography Classification | 393 | 393 | | Geographies | Contained and Overlapping Geographies | 393 | 393 | | Geographies | Parent Geography | 1 | 393 | | LCIA Methods | Method Name | 63 | 107 | | LCIA Methods | Method Version | 107 | 107 | | LCIA Methods | Status | 107 | 107 | | LCIA Methods | HiQLCD Documentation | 107 | 107 | | LCIA Methods | Further Documentation | 107 | 107 | | LCIA Methods | Links to Characterization Factor Sources | 107 | 107 | | LCIA Methods | Method UUID | 1 | 107 | | Impact Categories | Resources - Emissions - Total | 1,920 | 1,920 | | Impact Categories | Main impact/damage category | 1,920 | 1,920 | | Impact Categories | Inventory - Midpoint - Endpoint - AoP | 1,920 | 1,920 | | Impact Categories | Area of Protection (AoP) | 1,920 | 1,920 | | Impact Categories | Used in EN15804 | 1,920 | 1,920 | | Impact Categories | Method | 1,155 | 1,920 | | Impact Categories | Category | 1,105 | 1,920 | | Impact Categories | Indicator | 1,140 | 1,920 | | Impact Categories | Unit | 1,158 | 1,920 | | Impact Categories | Category name in method | 1,920 | 1,920 | | Impact Categories | Indicator name in method | 1,920 | 1,920 | | Impact Categories | Unit in method | 1,920 | 1,920 | | Intermediate Exchanges | CAS Number | 890 | 891 | | Intermediate Exchanges | Comment | 891 | 891 | | Intermediate Exchanges | By-product Classification | 891 | 891 | | Intermediate Exchanges | CPC Classification | 891 | 891 | | Intermediate Exchanges | Product Information | 891 | 891 | | Intermediate Exchanges | Synonym | 891 | 891 | | Elementary Exchanges | Unit Name | 2 | 4,796 | | Elementary Exchanges | CAS Number | 599 | 4,796 | | Elementary Exchanges | Comment | 4,796 | 4,796 | | Elementary Exchanges | Synonym | 4,796 | 4,796 | | Elementary Exchanges | Formula | 574 | 4,796 | | Impact Categories | Method ID has missing components | 163 | 1,920 | Source: [Database Overview：Field Availability](/files/hiqlcd/1.2.0/revisions/20261106T193638Z/hiqlcd_Database_Overview_v1.2.0_r20261106T193638Z.xlsx) ## Citation hiqlcd, version 1.2.0. Specify the system model, dataset and source when citing results. See [citation format](/en/resources/citation). ## Sources Sources and exact file revisions are recorded below each table or statement. File definitions are available in [File definitions](/en/resources/file-definitions). [Database Overview](/files/hiqlcd/1.2.0/revisions/20261107T020200Z/hiqlcd_Database_Overview_v1.2.0_r20261107T020200Z.xlsx) supplies the current catalog. Documentation-coverage and inventory-revision figures use the version’s process documentation; result comparisons use existing results aligned by dataset and category indicator.