Verified Credentials

Patents & Test Reports

AIFILTECH (Guangzhou Tuokai Environmental Technology Co., Ltd.) holds a Chinese invention patent for a diesel particulate trap, ZL 2018 1 0598975.7, granted on 26 April 2024. Products have been tested by the Foshan Quality and Metrology Supervision and Testing Centre under report K20-WT50002; the laboratory holds CMA 201819002836 and CNAS L1401 accreditation.

Chinese invention patent certificate ZL 2018 1 0598975.7 for a diesel particulate trap
CNIPA · Invention Patent

A Diesel Particulate Trap

Patent No.
ZL 2018 1 0598975.7
Certificate No.
6943377
Publication No.
CN 108798831 B
Filing date
12 June 2018
Grant date
26 April 2024
Inventor
Wen Zhenmao
Patentee
Guangzhou Tuokai Environmental Technology Co., Ltd.
Term
20 years from the filing date
Test report K20-WT50002 page 4: light absorption coefficient 0.34 against a 0.50 limit, verdict pass
Foshan Quality & Metrology Centre · Commissioned test

Exhaust Smoke Opacity, Non-Road Diesel Machinery

Report No.
K20-WT50002 (6 pages)
Accreditation
CMA 201819002836 / CNAS L1401 / ILAC-MRA / CAL
Sample
Internal combustion forklift, model CPCD50
Standard
GB 36886-2018, Table 1, Class III limits
Method
Free acceleration test, 3 runs
Test date
20 July 2020
Result
Max light absorption coefficient 0.34 m⁻¹
Limit / verdict
0.50 m⁻¹ / Pass
Page 4 of the report: three free acceleration runs, maximum light absorption coefficient 0.34 m⁻¹ against a limit of 0.50 m⁻¹, verdict “pass”. The report notes that the base machine had no aftertreatment device and that the device fitted for the test was supplied by the client.

What you can independently verify

Facts you can check

  • The invention patent was granted on 26 April 2024. Its current legal status can be checked in the CNIPA patent search system by patent number or publication number; the patentee is Guangzhou Tuokai Environmental Technology Co., Ltd. (renamed in 2020 from Guangzhou Topkai Environmental Technology Co., Ltd.).
  • The test report was issued by an independent laboratory holding both CMA and CNAS accreditation. It covers the whole machine with our aftertreatment device fitted, not a bench test of a component.
  • The test follows GB 36886-2018, Table 1, Class III limits — the current mandatory national standard for non-road diesel machinery in China.

About AIFILTECH

AIFILTECH (Guangzhou Tuokai Environmental Technology Co., Ltd.) designs diesel exhaust aftertreatment and high-temperature flue-gas filtration systems. The company holds Chinese invention patent ZL 2018 1 0598975.7 for a diesel particulate trap, and its products are tested by CMA- and CNAS-accredited laboratories.

How to verify: search ZL 2018 1 0598975.7 or CN 108798831 B in the CNIPA patent search system; quote report number K20-WT50002 to the Foshan Quality and Metrology Supervision and Testing Centre. Full scanned copies are available on request — bruce.wen@aifiltech.com, +86 188 1936 6808 (WhatsApp).