Visitors discuss pump and valve products at the Sixth International Exhibition Congress on Chemical Engineering and Biotechnology, which opened yesterday at the Beijing International Exhibition Centre. More than 400 exhibitors from 25 countries and regions will attend the five-day event. A series of seminars and forums are to be held during the exhibition. (newsphoto)

Visitors discuss pump and valve products at the Sixth International Exhibition Congress on Chemical Engineering and Biotechnology, which opened yesterday at the Beijing International Exhibition Centre. More than 400 exhibitors from 25 countries and regions will attend the five-day event. A series of seminars and forums are to be held during the exhibition. (newsphoto)