国产三级社区综合,日本专区,欧美专区,在线,社区老司机午夜性爱视频在线观看,青青草天天爱天天要天天日天天弄

    "2021 China Polyurethane Industry Technology Conference and High Tech Application Forum" will be held in Wuhan, Hubei Province from October 23 to 24, 2021. The forum has been committed to promoting the industry to focus on new application fields with great market potential, establishing technical exchanges and cooperation among scientific research institutes, universities, enterprises and institutions, and promoting the high-quality development of China's polyurethane industry.

    As the co-organizer of the conference, our company will make a detailed introduction to the technology and application of complete sets of equipment in polyurethane industry at home and abroad. Welcome colleagues to exchange and negotiate.