Pursuant to the Letter of Intent, Lifa Air and the Company agree to conduct further
negotiations on a possible mutually beneficial cooperation and collaboration between the
two parties. The new cooperation and collaboration between LifaAir and the Company may
involve indoor air quality business in the commercial sector and/or in relation to green
buildings globally in places such as Hong Kong, China, Asia Pacific Region and other
locations under One-Belt-One-Road strategy and framework.