v3.26.3
Segment reporting (Details) - USD ($)
 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Revenues $ 17,720,359 $ 16,376,697
Cost of revenues (17,479,727) (15,897,467)
Gross profit 240,632 479,230
Total other expenses, net (1,465,422) 641,535
Loss before income taxes (49,541,958) 6,928,576
Income tax expenses 0 (334)
Net (loss) income (49,541,958) 6,928,242
Robotics Solutions [Member]    
Revenues 107,589 0
Cost of revenues (59,512) 0
Gross profit 48,077 0
Activated Carbon [Member]    
Revenues 17,612,770 16,376,697
Cost of revenues (17,415,537) (15,897,467)
Gross profit 197,233 479,230
Combined [Member]    
Revenues 17,720,359 16,376,697
Cost of revenues (17,475,049) (15,897,467)
Gross profit 245,310 479,230
Selling, general and administrative expenses (48,317,168) 5,807,811
Total other expenses, net (1,465,422) 641,535
Loss before income taxes (49,537,280) 6,928,576
Income tax expenses 0 334
Net (loss) income $ (49,537,280) $ 6,928,242