1990, Nanjing Forestry University Yakeshi, Inner Mongolia by the wood processing plant extract of the commission to study the production of high-Larch chemical pulp brightness of the new technology.

• 1990年,南京林业大学受内蒙古牙克石木材加工栲胶厂的委托,研究了兴安落叶松生产高白度化学浆的新工艺。