Quality Control, Inspection & Compliance Documents

Company Certificates

Authoritative Certification, Quality Assurance

Verified Supplier Certificate

Certificate No. 169065202_T

Issue Date 2026-03-08

Expiry Date 2027-03-07

Issued By Alibaba.com

Scope Onsite assessment of the following areas was conducted by TUV Rheinland: Company Overview, Current Export Situation, Production Capacity, Production Process Management, Company Development / Expansion Plans, Certification & Photos, Human Resources, Export

UN38.3

Certificate No. TSZSE25023401-01

Issue Date 2025-03-28

Issued By Shenzhen Tiansu Calibration and Testing Co., Ltd.

Scope UN38.3 Test Summary for Lithium batteries / Sodium-ion batteries

Material Safety Data Sheet

Certificate No. TSZ26AU029A02-01

Issue Date 2026-01-30

Expiry Date 2026-12-31

Issued By Shenzhen Tiansu Calibration and Testing Co., Ltd.

Scope Li-Ion Battery Pack (Sample model: ET1860)

UN38.3

Certificate No. TSZ25HFN101-01

Issue Date 2025-07-14

Issued By Shenzhen Tiannuo Calibration and Testing Co., Ltd.

Scope UN Manual of Tests and Criteria 3.3/38.3/UN38.3

Material Safety Data Sheet

Certificate No. TSZ26AU029A01-01

Issue Date 2026-01-30

Expiry Date 2026-12-31

Issued By Shenzhen Tiansu Calibration and Testing Co., Ltd.

Scope Secondary Lithium-Ion Battery Pack (Sample model: ET1840)

UN38.3

Certificate No. TS25F001A01-01

Issue Date 2025-07-14

Issued By Shenzhen Tiansu Calibration and Testing Co., Ltd.

Scope UN Manual of Tests and Criteria 57.5/AC.10/11/Rev.8/Section 38.3

UN Manual of Tests and Criteria ST/SG/AC.10/11/Rev.8/Subsection 38.3

Certificate No. TSZ25EC023A01-01

Issue Date 2025-05-28

Issued By Shenzhen Tiansu Calibration and Testing Co., Ltd.

Scope Lithium-ion Battery Pack

Trademark

Certificate No. 7,543,716

Issue Date 2024-10-22

Issued By United States Patent and Trademark Office

Scope CLASS 12: Automobile motor accessories, namely, arm rests for vehicle seats; Automobile motor accessories, namely, car interior organiser bags, sold empty; Fitted covers specially adapted for fitting in vehicles; Automobile interior accessory, namely, dura

(CERTIFICATE OF TRADEMARK REGISTRATION)

Certificate No. 登録第7015524号

Issue Date 2025-06-25

Issued By 特許庁長官

Scope 第7類家庭用電気式ミキサー、電気機、電気式溶接装置、溶接機用電極、手持工具（手動式のものを除く）

СВИДЕТЕЛЬСТВО на товарный знак (знак обслуживания)

Certificate No. 1225362

Issue Date 2025-01-20

Expiry Date 2035-01-20

Issued By Федеральная служба по интеллектуальной собственности

Scope Приоритет товарного знака 20 июня 2025 г. Зарегистрировано в Государственном реестре товарных знаков и знаков обслуживания Российской Федерации 01 июня 2026 г.

Trademark

Certificate No. 8,176,954

Issue Date 2026-03-17

Issued By United States Patent and Trademark Office

Scope CLASS 7: Electric arc cutting apparatus; Electric arc welders; Electric arc welding apparatus; Electric soldering apparatus; Electric soldering machines; Electrodes for welding machines; Gas welding guns; Gas welding machines; Plasma cutting machines; Weld

EUROPEAN UNION INTELLECTUAL PROPERTY OFFICE CERTIFICATE OF REGISTRATION

Certificate No. 019238578

Issue Date 2025-12-26

Issued By EUIPO

Scope European Union trade mark identified below. The corresponding entries have been recorded in the Register of European Union trade marks.

Trademark Registration

Certificate No. 7,543,716

Issue Date 2024-10-22

Scope CLASS 12: Automobile accessory components, namely, arm rests for vehicle seats; Automobile accessories, namely, cup holders for use in vehicles; Automobile accessories, namely, fitted car seat covers; Automobile accessories, namely, fitted steering wheel c

(CERTIFICATE OF TRADEMARK REGISTRATION)

Certificate No. 登録第7015523号 (REGISTRATION NUMBER)

Issued By 特許庁長官 (DIRECTOR-GENERAL, JAPAN PATENT OFFICE)

Scope 第 7 類家庭用電気式ミキサー、電気機、電気式溶接装置、溶接用電極、手持工具（手動式のもの）（その他の類に属するものを除く）

СВИДЕТЕЛЬСТВО на товарный знак (знак обслуживания)

Certificate No. 1225360

Issue Date 2025-01-20

Expiry Date 2035-01-20

Issued By Федеральная служба по интеллектуальной собственности

CERTIFICATE OF FILING OF Corotec Tech Inc

Certificate No. 805521948

Issue Date 2024-04-24

Issued By Office of the Secretary of State

Scope Domestic For-Profit Corporation

Utility Model Patent Certificate

Certificate No. ZL 2025 2 1336010.2

Issue Date 2026-05-26

Issued By China National Intellectual Property Administration

Scope Portable multi-function electric welder

Utility Model Patent Certificate

Certificate No. ZL 2025 2 121244.6

Issue Date 2026-06-02

Issued By China National Intellectual Property Administration

Scope An anti-electric shock protective device for welding machines

Utility Model Patent Certificate

Certificate No. ZL 2025 1 0287839.6

Issue Date 2025-10-21

Issued By China National Intellectual Property Administration

Scope Portable multi-function electric welder

Utility Model Patent Certificate

Certificate No. ZL 2025 2 1336010.2

Issue Date 2026-05-26

Issued By China National Intellectual Property Administration

Scope Portable multi-function electric welder

UN "Manual of Tests and Criteria" ST/SG/AC.10/11/Rev.6/Subsection 38.3

Certificate No. TSZ25FH001A01-01

Issue Date 2025-07-14

Issued By Shenzhen Tiansu Calibration and Testing Co., Ltd.

Scope Secondary Lithium-ion Battery Pack

Utility Model Patent Certificate

Certificate No. No. 13812206

Issue Date 2021-07-30

Issued By China National Intellectual Property Administration

Scope A plasma cutting device with a built-in air pump

Utility Model Patent Certificate

Certificate No. ZL 2020 2 2842906.1

Issue Date 2020-12-01

Issued By China National Intellectual Property Administration

Scope A gas-shielded welding equipment

Utility Model Patent Certificate

Certificate No. ZL 2020 2 2835636.9

Issue Date 2021-08-06

Issued By China National Intellectual Property Administration

Scope A CO2 gas-shielded welding machine

Utility Model Patent Certificate

Certificate No. No. 14645685

Issue Date 2021-11-09

Issued By China National Intellectual Property Administration

Scope A high-performance argon arc welding machine

Utility Model Patent Certificate

Certificate No. ZL 2021 2 2381765.1

Issue Date 2022-02-11

Issued By China National Intellectual Property Administration

Scope A connection structure for a manual arc welding machine