big herdsman in 2022 guizhou layer technology seminar-pg电子官方

july 18, 2022

from july 12 to 13, 2022, 2022 guizhou layer technology seminar (the fourth session) was grandly held. as one of the organizers of the conference, mr. leng jianwei, president of big herdsman environmental engineering research institute, and mr. geng jifu, sales manager attended the conference and gave a speech on behalf of the company.