国产国产成人精品久久,青青久操视频,亚洲婷婷综合色高清在线,女女综合网,成人免费草草视频,亚洲色图第三页,亚洲视频在线观看网址

The first prize of science and technology progress of Guangxi forestry department and the second prize of Guangxi science and technology progress in 1998

Time:2020-08-19
The first prize of science and technology progress of Guangxi forestry department and the second prize of Guangxi science and technology progress in 1998

Guangxi Wuzhou Richeng forest products Chemical Co., Ltd. participated in the development of the special chemical project "solvent tetrahydrorosin (highly hydrogenated rosin) industrial development" of the State Science and Technology Commission, and won the first prize of science and technology progress of Guangxi forestry department and the second prize of science and technology progress of Guangxi District in 1998.