"Widen" brand sulfate-resistant Portland cement is made of new dry-process cement clinker with specific mineral composition. , mainly used in engineering projects with high sulfate content and serious concrete erosion. The C3A content of this product is only 1.0%, the C3S content is 45-48%, and the expansion rate of 14 antennas is only 0.020%. The strength of 3 days and 28 days has been successfully applied to the Yuncheng Salt Lake Development Project, the special geological disaster emergency rescue project of the South Luliangshan Tunnel of the Central-South Railway Pass in Shanxi and other projects.