Muong megalith tomb in 17th - 18th century (Kim Boi, Hoa Binh)

PEG-treating in conservating a dongsonian dugout log coffin of 2300 years old

During excavation 2004 in Du Sang rock-shelter ( Kim Boi, Hoa Binh)

The S.E.M image to look for prehistoric bacterien from a Dongsonian ramie cloth fabric.

A silk fragment with weaving design excavated from 18th mandarin's tomb (Project : Ancient Textile in Vietnam)