| Period ending | 31/3/2019 | 31/3/2018 | 31/3/2017 | 31/3/2016 |
| Net income | 3,39,60,000 | 1,03,20,000 | 7,04,600 | 8,28,200 |
| Operating activities, cash flow provided by or used in |
| Depreciation | - | 5,09,600 | 4,55,700 | 4,83,100 |
| Adjustments to net income | - | -5,82,500 | -8,62,400 | -1,19,100 |
| Changes in accounts receivable | - | -35,71,200 | 2,13,600 | -4,90,500 |
| Changes in liabilities | - | 18,91,600 | 5,21,700 | -4,00,000 |
| Changes in inventory | - | -17,53,500 | 13,82,100 | 23,69,200 |
| Changes in other operating activities | - | 7,75,500 | 1,78,700 | 2,700 |
| Total cash flow from operating activities | - | 75,96,100 | 26,02,200 | 26,82,500 |
| Investment activities, cash flow provided by or used in |
| Capital expenditure | - | -5,82,600 | -8,78,300 | -5,56,900 |
| Investments | - | -49,95,000 | -14,24,200 | -3,47,000 |
| Other cash flow from investment activities | - | 28,200 | 33,900 | 600 |
| Total cash flow from investment activities | - | -55,41,200 | -22,54,500 | -8,97,000 |
| Financing activities, cash flow provided by or used in |
| Dividends paid | - | -13,67,700 | -13,67,700 | -7,81,600 |
| Sale purchase of stock | - | - | - | - |
| Net borrowings | - | -60,700 | -3,10,200 | -8,85,800 |
| Other cash flow from financing activities | - | -3,60,100 | -81,700 | -2,53,300 |
| Total cash flow from financing activities | - | -17,88,500 | -3,91,900 | -19,20,700 |
| Effect of exchange rate changes | - | 25,400 | -9,500 | 20,900 |
| Change in cash and cash equivalents | - | 2,91,800 | -53,700 | -1,14,300 |