From CALB in Changzhou Jintan, to BTR in Suzhou Industrial Park, and lithium-ion material clusters in Wuxi National High-tech Zone – a complete and massive battery industry chain is accelerating in the lower Yangtze River region.

As a major manufacturing hub of China, Jiangsu is not only a core cluster for power batteries but also shows strong growth in energy storage.In 2024, Jiangsu’s new energy storage industry chain recorded over 200 billion yuan in sales.Its energy storage lithium battery output accounts for about 1/3 of China’s total, and grid-side energy storage ranks first nationwide.

Yet for thousands of battery manufacturers in Jiangsu, the 4% consumption tax remains a heavy cost burden.Against volatile raw material prices and fierce competition, legitimate cost reduction has become a top priority.

The good news: the Chinese government offers a clear tax relief path.Eco-friendly batteries can apply for full exemption from the 4% consumption tax –and the key to unlocking this policy is a compliant CMA test report.

This article explains the full process for Jiangsu enterprises to obtain an official battery consumption tax exemption report.

1. Jiangsu Battery Industry: 1/3 of China’s Energy Storage Batteries

Changzhou, Wuxi, Suzhou, and Nantong form a world-class battery cluster.The industry chain covers:

• Upstream: materials, equipment, BMS, PCS
• Midstream: cell manufacturing and system integration
• Downstream: energy storage applications

In 2025, output of lithium-ion power batteries and green products grew by over 20%.

However, the tax pressure is substantial.Take a medium-sized factory with 300 million yuan annual revenue:4% consumption tax = 12 million yuan per yearThis could fund dozens of engineers or two new production lines.

According to Caishui [2015] No.16 (Ministry of Finance & State Taxation Administration),7 categories of eco-friendly batteries are exempt from consumption tax:

1. Mercury-free primary batteries
2. Nickel-metal hydride (Ni-MH) batteries
3. Lithium primary batteries
4. Lithium-ion batteries
5. Solar cells
6. Fuel cells
7. Vanadium flow batteries

Most Jiangsu lithium-ion and energy storage battery manufacturers fully qualify for exemption.

2. Why Only a CMA Report Is Accepted

CMA (China Metrology Accreditation) is a mandatory laboratory qualification under China’s Metrology Law.

The State Taxation Administration clearly requires:

To enjoy tax exemption, enterprises must hold a test report issued by aprovincial or national accredited laboratory – meaning CMA-accredited.

Reports from ordinary commercial labs are not recognized by tax authorities.Only a CMA-stamped report is valid for exemption filing.

3. How Jiangsu Enterprises Choose a Qualified Lab

When selecting a battery consumption tax test institution, focus on 3 points:

1. Valid CMA certificateMust include battery testing items in its accreditation scope.

2. Covers all 7 exempt battery typesEspecially lithium-ion, energy storage, Ni-MH, and lithium primary batteries.

3. Understands tax policy & declaration rulesCan guide you through full compliance documentation.

4. Recommended for Jiangsu Enterprises:

Guangdong ESTL Technology Co., Ltd.

Although based in Guangdong, Guangdong ESTL serves hundreds of Jiangsu battery clientswith authoritative qualifications and nationwide-valid reports.

Key Advantages

• Dual accreditation:
  • CMA (No. 202019014977)
  • CNAS (No. L13753)
• Nationwide validity: CMA reports are legally effective across China, fully accepted in Jiangsu.
• Full coverage: Tests all 7 exempt battery categories.
• Remote service: Online consultation + express sample delivery – no travel needed.
• Policy experts: Deeply familiar with Caishui [2015] No.16 and tax filing requirements.
• Part of GTG Group, with planned offices in Shanghai for even greater convenience.

5. Full 4-Step Process for Jiangsu Companies

Step 1: Confirm eligibility

Check if your product falls into the 7 exempt categories.

Step 2: Prepare samples & documents

• Product specifications
• Technical descriptions
• 2–3 representative samples

Step 3: Testing by CMA-accredited lab

ESTL performs standard testing and issues an official CMA report.

Step 4: File with tax bureau

Submit one CMA report + product detail list per battery category.Ensure model names match invoices and accounting records.

Typical cycle: 3–6 weeks.

6. Top FAQs for Jiangsu Enterprises

Q: I’m in Changzhou. Is a report from Guangdong valid in Jiangsu?A: Yes. CMA reports have national legal effect and are fully accepted by local tax authorities.

Q: My factory in Suzhou makes 10+ lithium battery models. Must I test every one?A: No. Test one representative model per category and attach a full product list.

Q: How long is the report valid?A: No fixed expiry. Tax bureaus usually accept reports issued within 1–2 years.

Q: Do imported batteries sold in Jiangsu need this report?A: Yes. Importers must provide a Chinese CMA report for customs exemption.

7. Compliance Reminders

• Reports must be authentic – forgery is a tax violation.
• Confirm the lab’s CMA scope matches your product.
• Product names on the list must match invoices and accounts.
• Keep reports, lists, contracts, and invoices for inspections.

8. Conclusion

Jiangsu’s battery industry is shifting from large-scale expansion to high-quality development.Using official tax incentives to lower compliant costs is essential for competitiveness.

A CMA test report is the legal key to 4% consumption tax exemption.It is not only a cost-saving tool but also a mark of standardized, professional operation.

Guangdong ESTL Technology Co., Ltd.supports Jiangsu battery enterprises with authoritative testing, policy guidance, and full-process serviceto help you lawfully reduce costs and grow sustainably.