BOT, TOT, ABS and PPP are four different ways of international financing, and they serve different purposes in infrastructure project financing, and should be differentiated in each specific situation.

• BOT、TOT、ABS和PPP作为国际融资的不同方式,在基础设施项目融资领域各有所长,应根据具体项目的实际情况加以区分运用。