product feature ：

1. CS-Frame Columns: No formwork needed, fire-resistant, ductile, and more steel-saving compared to the all-steel method
2. Optimal Node: Facilitates a sturdy and cost-saving connection between steel beams and concrete columns
3. CS-Frame Beams: No need for high shoring, good rigidity, high load-bearing capacity, lightweight, and quick to hoist
4. Optimal Chord Beams: Adds prestressed rigid secondary beams, saving on costs
5. Optimal End Beams: The end lower flange is compressed by concrete, while the middle combines with the floor slab, light in weight, and cost-saving
6. Optimal Web Beams: The midsection of the beam uses a corrugated web, saving steel quantity, with the flat web yielding first under seismic loads, enhancing safety.