4 Methods for Carbon Footprint Accounting of Packaging Materials: Response Boundaries When Small and Medium Print Mills Face Scope 3 Data Requests from Brands

In May this year, a gift box client in Nanjing who exports to Europe and the U.S. came to me. He needed a "Packaging Carbon Footprint Report" for his German buyer. The template his German buyer gave him was the GHG Protocol Scope 3 (value chain indirect emissions) spreadsheet, requiring the printer to fill in carbon emission data "from raw materials to factory gate." The client's exact words: "They asked for this last year, I pushed it off for six months, I can't push it off again this year."

At the time I spent 3 days looking into various carbon emission accounting methods, and the answer I gave him was—what a printer can calculate is only Scope 1 (direct emissions) + Scope 2 (purchased electricity emissions), and the Scope 3 data involving the raw material side is not accessible to the printer; the brand owner must ask the paper mill and ink manufacturer for it. This client later hired a third-party carbon accounting consultancy to produce the report, with the printer providing 5 categories of data as support, at a total cost of RMB 38,000.

This is the real situation facing small and mid-sized printers on the matter of "carbon emissions"—there are many accounting methods, but a printer can only calculate the tip of the iceberg.

The Real Differences Among 4 Carbon Emission Accounting Methods

There are 4 categories of carbon emission accounting methods commonly used in the packaging industry. They all sound similar, but their applicable scenarios and calculation scopes are entirely different:

The "Can Printers Do It?" column for these 4 methods looks the same on the surface, but the real difference lies in data accessibility. In short:

• ISO 14064 / GHG Protocol—internationally accepted, most frequently requested by European and U.S. clients, but Scope 3 data is essentially inaccessible to the printer
• PAS 2050—product-level, required by large retailers such as UK's Tesco and Netherlands' Albert Heijn, and is the most frequently cited method for "packaging carbon footprint"
• GB/T 51316—for domestic compliance, mainly required by emission-control enterprises (annual energy consumption above 5,000 tonnes of standard coal equivalent); printers are generally not in this category

So in real accounting scenarios faced by printers, 80% are ISO 14064 + GHG Protocol Scope 3 + PAS 2050 product-level, while domestic GB/T 51316 is essentially not encountered by printers.

The 3 Categories of Data Printers Can Calculate

Although Scope 3 data is hard to obtain, there are 3 categories that printers can calculate themselves—these are the "production-side baseline data" that must be supplied when the brand owner prepares the report:

Category 1: Scope 1 Direct Emissions (Ink Solvents, Natural Gas, Diesel)

What the printer can calculate:

• Ink/solvent volatilization—monthly ink/solvent procurement volume × VOC emission factor (approx. 2.5-3.5 kg CO2e/kg solvent)
• Natural gas combustion—monthly natural gas usage × emission factor (1.885 kg CO2e/m³ natural gas)
• Diesel/gasoline (transport, printing machine power generation)—monthly fuel consumption × emission factor (diesel 3.16 kg CO2e/L, gasoline 2.93 kg CO2e/L)

Data sources: the printer's "procurement ledger" + "energy ledger". LeXiang exports procurement and energy data once a month as the baseline data for carbon accounting.

Category 2: Scope 2 Purchased Electricity Emissions

What the printer can calculate:

• Purchased electricity → monthly electricity consumption × grid emission factor (East China approx. 0.7-0.8 kg CO2e/kWh, updated annually by the National Development and Reform Commission)
• Purchased heat → monthly heat consumption × heat emission factor (approx. 0.11 kg CO2e/MJ)

Data source: electricity bills. LeXiang archives electricity bills monthly as the data source for Scope 2.

Category 3: Direct Data from the Production Stage (Energy Consumption per Unit, Material Loss)

What the printer can calculate:

• Energy consumption per unit—electricity + natural gas consumption per box for printing/die-cutting/laminating
• Material loss per unit—actual vs. theoretical consumption of paper, ink, and adhesive
• Waste generation per unit—generation of waste paper, waste ink, and waste solvent

Data sources: the printer's "daily production reports" + "material ledger". This is the core data for the "production stage" in a PAS 2050 report, and the printer must establish ledgers to provide it.

The 4 Categories of Scope 3 Data Printers Cannot Obtain

Scope 3 (value chain indirect emissions) is essentially inaccessible to printers in terms of data, and must be obtained by the brand owner from suppliers:

1. Raw material acquisition stage—carbon emissions from paper production (data from paper mills), ink production (data from ink manufacturers), and adhesive production (data from adhesive manufacturers). All the printer can do is record supplier names and procurement volumes; the specific emission data must come from upstream
2. Upstream transport—emissions corresponding to the transport distance, mode, and volume of raw materials from supplier to printer
3. Downstream transport—emissions from transporting finished goods from printer to brand owner's warehouse/retailer
4. Product use and disposal—emissions from consumer use of the packaging, and emissions from recycling/incineration/landfill after the packaging is discarded

This is why Scope 3 is so difficult—it involves the entire supply chain, the printer is just one link, and cannot account for it independently. That Nanjing client eventually hired a carbon accounting consultancy, and the consultancy obtained paper carbon footprint data directly from the paper mill (most European and U.S. paper mills already have this), while the printer was responsible only for Scope 1+2 + direct production-stage data.

The Real Demand Scenarios of 3 Categories of Clients

The carbon emission demand scenarios printers encounter from different clients vary greatly; I categorize them into 3 types:

Scenario 1: European/U.S. Brand Owner Requests a Scope 3 Report

The most common. What the client wants is not a printer's report, but "the printer's contribution data within Scope 3." The printer supplies 5 categories of production data (paper usage, ink/solvent usage, electricity consumption, gas consumption, transport distance), and the brand owner or a third-party agency consolidates these into a Scope 3 report.

Real case: a printer in Jiangsu that makes electronics packaging and supplies Apple and Dell every year. Apple requires the Scope 3 data sheet; the printer submits an Excel template once a year, fills in the 5 categories of data monthly, and Apple has its own team that consolidates this into a full-product Scope 3 report. The printer is only the "data provider", not the "report issuer".

Scenario 2: E-commerce Platforms Request Green Packaging Carbon Footprint

Medium frequency. JD.com, Tmall, and Amazon have all introduced green packaging carbon footprint disclosure requirements, but for now most are "encouraged disclosures", not mandatory. When printers receive such requests, what they actually do is:

1. Provide 5 categories of baseline data per unit
2. The brand owner commissions a third-party agency to produce the complete report
3. The brand owner bears the report cost, and the printer charges a "data cooperation fee" of RMB 500-1,500 per order

LeXiang's current practice is to quote the "data cooperation fee" as a separate line item, not bundled into the per-box price, so the client knows exactly what they are paying for.

Scenario 3: Government/Industry Association Requests Low-Carbon Demonstration

Low frequency but must be taken seriously. The Departments of Industry and Information Technology in Jiangsu, Guangdong, and Zhejiang all have "Low-Carbon Demonstration Enterprise" and "Green Factory" selection programs, requiring enterprises to submit carbon emission reports. When printers encounter such requests:

• Applying for "Green Factory"/"Low-Carbon Demonstration" selection requires a GB/T 51316 report, with a cycle of 3-6 months and a cost of RMB 50,000-100,000
• Government selection programs generally offer special subsidies, so the printer's actual cost is RMB 20,000-50,000

LeXiang completed a "Jiangsu Provincial Green Factory" selection in 2025, spending RMB 48,000 on the carbon emission report, receiving RMB 30,000 in government subsidies, for a net cost of RMB 18,000. The certificate is valid for 3 years, and during this period the printer gets extra credit on government orders.

3 Response Strategies for Printers

Facing clients' increasingly frequent carbon emission data requirements, printers have 3 response strategies:

Strategy 1: Establish ledgers for 5 categories of data—paper procurement volume, ink/solvent procurement volume, electricity consumption, gas consumption, transport distance. Archive once per month as the baseline for carbon accounting. Investment: 1 clerk 1-2 days/month.

Strategy 2: Do not proactively produce "carbon footprint reports"—this is the job of third-party consulting firms; printers lack the cost efficiency and professional expertise. What the printer does is serve as "data provider", supplying the data to the brand owner or third-party agency.

Strategy 3: List a "carbon data cooperation fee" separately on the quote—RMB 500-1,500 each time, so clients understand that the printer's carbon data has a cost, and is not provided for free. This is how small and mid-sized printers can earn their first revenue from carbon emissions.

The 5 Core Fields of the Carbon Data Ledger

For printers to build a carbon data ledger, 5 core fields are mandatory:

1. Paper procurement volume (kg/month)—broken down by SKU, including FSC/recycled paper marking
2. Ink/solvent procurement volume (kg/month)—broken down by ink type (water-based/solvent-based/UV)
3. Electricity consumption (kWh/month)—broken down by workshop
4. Gas consumption (m³/month)—broken down by use (printing/canteen/dormitory)
5. Transport distance (km/month)—broken down by raw materials/finished goods and transport mode

LeXiang added 5 fields in its ERP, and exports an Excel file to the client every month. The client's third-party agency uses this Excel to produce the report directly, which is very efficient.

Key Takeaway

Printers need to stay clear-headed about "carbon emissions": accounting methods are the brand owner's responsibility; all a printer can do is provide 5 categories of baseline data. Do not force yourself to take on Scope 3 reports just to win orders—neither the expertise nor the data access is there. Build solid data ledgers, and list the cooperation fee clearly; this is the sustainable posture for printers on carbon emission compliance.

Further reading: 3 Methods of Carbon Emission Accounting for Packaging Enterprises, 3 Hard Indicators for VOC Treatment in Packaging Printing, 5 Years into the New Solid Waste Law, Packaging Printers Are Still Running Naked, Green Printing vs. Green Packaging.