Supply Chain & Scope 3

Start with your purchase inventory. Find suitable Chinese background data for materials, components and their upstream activities, build an interpretable emissions estimate, and identify the supplier information to collect next.

Supply-chain production context
Purchase inventory

Start with what you buy

Procurement teams know how much material or how many components they purchase, but may not know the energy, raw materials and emissions involved in making them. A supply-chain assessment connects those purchases to their production background, helping identify emissions hotspots and the data gaps that deserve attention first.

This page focuses on purchased products and their upstream production. Where suitable supplier-specific data are unavailable, HiQLCD offers background-data candidates for relevant Chinese production activities, supporting purchase-related estimates, supplier discussions and subsequent model refinement.

Production background

Your purchases have a production history

A purchase record can tell you how many kilograms of resin you bought. It does not automatically include the raw materials, energy and emissions needed to produce that resin. Background process data brings those upstream activities into the assessment and scales them to the quantity purchased.

Resin used in Europe may have been produced in China. Production routes, electricity supply and technology conditions can affect its environmental profile. Match the data to where and how production occurs; the buyer’s location or a supplier’s registered address alone is not enough.

Connect procurement information to upstream emissions

Organize your purchase inventory

First, organize the purchased products, quantities and units, reporting period and known production locations. Retain suitable supplier footprints, EPDs or process inventories, and flag missing material specifications, production routes and locations. This separates existing evidence from inputs that require a proxy.

Match the gaps to background data

Next, match the gaps to suitable HiQLCD records. Connect quantities using the reference product, unit and boundary. For cumulative material or finished-product data, check the production activities already included so that the same material, electricity or processing burdens are not added again.

Calculate, interpret and refine

Then calculate and interpret the assessment in the appropriate tool. Identify major contributions by material, component or purchase category, document proxy choices, and take priority data requests back to suppliers.

Compare supply options only when specifications, boundaries and methods are comparable.

Data selection

Find data at the level of your purchases

For raw-material purchases, start with relevant material, energy and transport activities in the Basic Database. For batteries, photovoltaic products or automotive components, inspect the product and process scope of the corresponding industry database. The key is whether the record represents the purchased product and production stage, rather than merely having a similar name.

HiQLCD v1.5.0 database cover

Cross-sector inputs and activities

Basic covers materials, energy, manufacturing, transport and waste-related activities across product systems.

Explore cross-sector data
HiQLCD lithium-battery industry database cover

Industry-specific production

Explore the relevant scope for steel, batteries, photovoltaics, automotive, energy, waste treatment and aluminium studies.

Explore industry databases
Reporting scope

Make the estimate fit your reporting scope

Check geography, technology, time coverage, system model and dataset boundary. A China label is a starting point: the same material may involve different processes, energy sources and recycled-content assumptions. For each proxy, explain why it was selected, what remains unmatched and how the data could be improved.

Place product production, transport and other supply-chain activities within a consistent accounting boundary, checking whether transport, treatment or upstream burdens are already included. Distinguish estimates based on background data from supplier measurements. A dataset impact result does not represent a company’s complete Scope 3 inventory.

Data access

Get the data into your workflow

Search and inspect records in HIQ QUERY, or discuss a data package covering the processes needed for your project. For use in your own platform, confirm the API’s search, matching and returned fields. Choose unit-process data, LCI inventories or LCIA results according to the task and the content actually available in the selected product.

HiQLCD dataset identity and system-boundary fields
Online access

Search and inspect records in HIQ QUERY for the products and production activities in your purchase inventory.

Illustrative ILCD field spreadsheet
Data packages

Discuss suitable records, formats, versions and permitted use for the processes needed in your project.

Illustrative API input and output structure
API access

For use in your own platform, confirm the API search, matching and returned fields for the selected product.

Your data needs

Bring a sample purchase record

Bring a sample purchase record with the product or material name, specification, quantity and unit, known production location and available supplier information, together with your software and delivery needs. These details provide the basis for discussing suitable records, formats, versions and permitted use.

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