欧美日韩在线激情,欧美午夜精品,caoporn国产精品免费视频,91婷婷综合,九九re6热在线视频精品66,日韩精品在线视频,国产区最新

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.