On September 21,2019, the department of archives and e-government, school of sociology, Suzhou University carried out a research on the acidification of judicial archives in the Republic of China era.Heritage Preservation participated in and undertook the task of acidification investigation.

In the research, technicians from Reli Heritage Preservation conducted detection on sample archives with portable acidity meter according to TAPPI T529 om standard. With 20+ teachers and students from archives and e- government affairs department observing, experiencing and studying at the same time. After 4 days of work, a total of 99 pieces of judicial archives of the Republic of China era were sampled and tested.