Hyderabad: City-based Penna Cement Industries has received approval of capital markets regulator Securities and Exchange Board of India (Sebi) to go ahead with its Rs 1,550-crore initial public offering (IPO). The IPO includes a fresh issue of Rs 1,300 crore and an offer for sale of up to Rs 250 crore by its promoter PR Cement Holdings. Currently, P R Cement Holdings holds a