The Gansu Provincial Museum was recently granted invention patents for two technologies it had developed to preserve paper. It was the first time the museum has won patents related to relic protection. The technologies can prevent paper from turning moldy or fragile without causing air pollution because the polymer composites they use contain no toxic ingredient and have no color or smell. Researchers said the technologies will be very helpful in the repairing and displaying of paper relics.

(Source: China Daily)