The plaques, 1.2m high and 1m wide, weighing around 100kg each will be sent to Vietnam before the holding of ceremonies in Hanoi on April 27 and in Halong City on May 1 with special art performances.
They will be placed in Hanoi and at the Bai Chay tourism site in Halong.
The NewOpenWorld Organisation has sent a sample of the plaque to Vietnam for consideration, hoping that Vietnam will invite representatives from 6 other countries which have wonders of nature to attend the ceremonies to share experience in protecting and preserving wonders of nature.
Halong Bay was officially recorgnised as one of five new world wonders of nature but two wonders of Indonesia and South Africa have remained to be crosschecked.
(Source: VOV)