v3.22.2.2
Related party transactions (Details)
12 Months Ended
Mar. 31, 2022
USD ($)
Related Party Transaction [Line Items]  
Contract sum $ 823,793
Research and development 609,397
Outstanding contract sum $ 214,396
Dunhua Acer Truncatum Seedling Planting Co Ltd [Member]  
Related Party Transaction [Line Items]  
Desearch and development description Seedling analysis
Contract sum $ 109,060
Research And Development percentage 70.00%
Research and development $ 65,436
Outstanding contract sum $ 43,624
Zhong Yuan Nervonic Acid Biotechnology Co Ltd [Member]  
Related Party Transaction [Line Items]  
Desearch and development description Nervonic acid analysis
Contract sum $ 155,800
Research And Development percentage 75.00%
Research and development $ 116,850
Outstanding contract sum $ 38,950
Zhong Yuan Nervonic Acid Biotechnology Co Ltd One [Member]  
Related Party Transaction [Line Items]  
Desearch and development description Nervonic acid analysis
Contract sum $ 67,306
Research And Development percentage 100.00%
Research and development $ 67,306
Outstanding contract sum
Ai Rui Tai Ke Fertilizer Co Ltd [Member]  
Related Party Transaction [Line Items]  
Desearch and development description Chemical elements, lignin, cellulose testing
Contract sum $ 94,337
Research And Development percentage 80.00%
Research and development $ 75,470
Outstanding contract sum $ 18,867
Ai Rui Tai Ke Fertilizer Co Ltd One [Member]  
Related Party Transaction [Line Items]  
Desearch and development description Chemical elements, lignin, cellulose testing
Contract sum $ 124,640
Research And Development percentage 75.00%
Research and development $ 93,480
Outstanding contract sum $ 31,160
Zhong Yuan Bo Rui Biotechnology Zhuhai Hengqin Co Ltd [Member]  
Related Party Transaction [Line Items]  
Desearch and development description Metabolomics testing and analysis
Contract sum $ 272,650
Research And Development percentage 70.00%
Research and development $ 190,855
Outstanding contract sum $ 81,795