In RateStar, I can see that over the last 5 years, their Cash outflows due to purchasing Fixed Assets has been close to -27 Crs and the change in Gross Block has been about 24 Crs. There are usually small mismatches like this in websites like Screener / RateStar. The Annual Reports for the past 5 years should give you the complete picture.
Also, Working Capital, Margins and ‘Capex’ (Related to Capital Turnover) are different parts of the business. Market Share is in the past. The future depends upon how the business will evolve in the future (And consequently, the figures mentioned above). This understanding only comes after a thorough analysis of the company.
Do visit VP’s Jamna Industries thread to get a better understanding: