Clean Tech China Cleantech Market Potential First Tier subsectors: Waste management and recycling, water, and air pollution controls account for 70% of the total investment. Second Tier Subsectors: Environmental monitoring and energy efficiency sectors account for about 20% of the Investment. Note: 1. Investment data from 2013.1-2016.7; 2.Only deals with disclosed company names are take into account; 3.Investee companies involved in several subsectors are calculated multiple times in different categories. Source: PwC, Chinese Cleantech Market Opportunities, 2017