Invest 25k in 2018 stock high 1.5 cr

In 2018, I invested 25K in a stock, and after 5 years, it gave me a return of 1.5 Cr. However, I decided to hold it, and now its current value is 50 lakh. The stock name is Raj Rayon, and I bought it in 2018. At that time, I invested in many penny stocks, more than 50, and 30+ of them have given me over 1000% returns. Normally I don’t sell stocks but you can logically suggest whether I should hold Raj Rayon or not.