Date of

Place of

% of

Name of Entity

Incorporation

Incorporation

Ownership

Principal Activities

CN Energy

November 23, 2018

British Virgin Islands

Parent

Holding company

MZ HK

December 6, 2018

Hong Kong, China

100%

Holding company

Ewforest

November 29, 2024

Hong Kong, China

100%

Holding company

CN Energy USA Inc.

March 31, 2022

Delaware, U.S.A

100%

Inactive

Pathenbot

July 2, 2025

California, U.S.A.

100%

Active

MZ Pintai

January 22, 2019

Zhejiang, China

100%

Holding company

Zhejiang New Material

May 24, 2021

Zhejiang, China

100%

Produce and sell Activated Carbon

Zhoushan Xinyue

April 8, 2022

Zhejiang, China

100%

Trading

Tanmulai

July 2, 2025

Zhejiang, China

100%

Trading

Yunnan Yuemu

September 2, 2022

Yunnan, China

100%

Holding company