Specialized vehicles are used by the authorities in the process of clearing trees. Currently, in Hanoi, there are 4 maintenance units along with 4 reinforcement units and 9 support units from provinces and cities with a total workforce of about 700 people; along with more than 48 cranes, more than 20 transport trucks, more than 160 chainsaws of all kinds participating in clearing broken and fallen trees and replanting trees that can be restored. Specifically, the Green Parks Company Limited and support and assistance units from the provinces and cities: Quang Binh, Da Nang, Son La, Ho Chi Minh City, Quy Nhon, Ha Tinh, Hue, Vinh, Dong Nai with more than 500 workers, 24 cranes, 4 transport trucks, 103 chainsaws. Construction, Service and Trade Joint Stock Company 68 has about 77 workers, 7 cranes, 5 transport trucks, 2 excavators, 15 chainsaws, etc.