I spend much of my time looking for quality ASX shares for Australian investors. Here are my ten quality criteria, which includes special mention from some of my favourite ASX small caps. These are the sort of shares that can remain in a share portfolio for a long-time. You know what I’m talking about. If ASX share BHP halved in price tomorrow, you would want to buy more. This is a share that is going to be around forever. What I’m talking about are the BHPs of the small cap world. The types of shares that if they fall, you would want to buy more.