The "Tianrui" brand series cement produced by our company has the characteristics of high early strength, large rich grade, low alkali content and low heat of hydration. It is an ideal choice for large bridges, high-rise buildings, water conservancy projects, etc. The first choice product for highway and railway construction. The leading products include 52.5-grade ordinary Portland cement (code-named PO52.5), 42.5-grade ordinary Portland cement (code-named PO42.5), and 32.5-grade composite Portland cement (code-named PC32.5), which are certified by China Fangyuan Mark. The committee's Fangyuan Mark Certification Center has audited and certified it in compliance with ISO9001:2000 quality management system standards. It was rated as "Henan Province Famous Brand Product" by the Henan Province Famous Brand Strategy Promotion Committee. It has successively won the honorary titles of "National Inspection-Free" and "China Famous Trademark".