Agha Steel Industries Ltd. is planning Pakistan's biggest-ever private sector initial share sale in 2017 to help boost output as China funds more than $55 billion in infrastructure projects across the nation and a buoyant stock market spurs investor demand. The Karachi-based company plans to raise as much as PKR 10 billion, selling a 25% stake, executive director Hussain Agha said in an interview. The sale will be the largest since the 12-billion rupees government stake sale of Habib Bank Ltd in 2007, the country's largest IPO yet.