v3.26.1
Summary of Significant Accounting Policies (Tables)
6 Months Ended
Apr. 30, 2026
Accounting Policies [Abstract]  
Schedule of Estimated Useful Lives of Property and Equipment Depreciation is computed using the straight-line method over the estimated useful lives of the assets.
    Estimated
useful lives
(years)
Electronic equipment   2 – 5
Office facilities   2 – 5
Machinery equipment   3 – 5
Vehicles   4 – 5
Schedule of Estimated Useful Lives of Intangible Assets

The estimated useful lives of the Company’s intangible assets are listed below:

 

    Estimated
useful lives
(years)
 
Patent right   20  
Schedule of Revenue by Major Product Line

Revenue by major product line

 

   For The Six Months Ended
April 30,
 
   2026   2025 
Wastewater treatment revenue  $9,186,084   $493,123 
River water quality management revenue   4,297,180    4,728,449 
Product sales revenue   1,344,830    277,081 
Training revenue   3,502,890     
Others   254,541     
Total Revenue  $18,585,525   $5,498,653 
Schedule of Contract Liabilities The contract assets as of April 30, 2026 and October 31, 2025 are as follows:
   April 30,
2026
   October 31,
2025
 
Contract assets for wastewater treatment revenue  $690,024   $263,528 
Contract assets for river water quality management revenue   1,148,111    894,842 
Total  $1,838,135   $1,158,370 
Schedule of Movement of Contract Assets

The following table sets forth the movement of contract assets:

 

   April 30,
2026
   October 31,
2025
 
Balance, at beginning of the year  $1,158,370   $603,979 
Addition   673,711    1,112,636 
Reduction   (54,705)   (565,881)
Exchange rate difference   60,759    7,636 
Balance, at end of the year  $1,838,135   $1,158,370 
   April 30,
2026
   October 31,
2025
 
Balance, at beginning of the year  $   $ 
Addition   5,755,527     
Reduction   (4,522,302)    
Exchange rate difference   23,156     
Balance, at end of the year  $1,256,381   $ 
Schedule of Foreign Currency Translation of Financial Statement Items

Translation of amounts from RMB into U.S. dollars has been made at the following exchange rates:

 

Balance sheet items, except for equity accounts     
April 30, 2026   RMB6.8273 to $1 
October 31, 2025   RMB7.1169 to $1 
      
Income statement and cash flows items     
For the six months ended April 30, 2026   RMB6.9555 to $1 
For the six months ended April 30, 2025   RMB7.2681 to $1