H-steel, also known as H-beam, is a type of structural steel with an H-shaped cross-section. This design offers excellent strength-to-weight ratios, making it a preferred choice for projects requiring robust support with minimal material usage.The H-beam's flanges are parallel, which simplifies connections and enhances load-bearing capabilities.

Hot-rolled carbon steel and cold-rolled carbon steel are essentially the same, but due to the huge differences in their production processes, they have fundamental differences in performance, appearance and application.

Seamless steel pipes and welded steel pipes are the two core types of steel pipes. There are significant differences between the two in production processes, performance characteristics, and application scenarios.

HPB300 plain round steel bars and HRB400 ribbed steel bars are two types of core steel bars commonly used in construction. They differ significantly in performance, appearance, and application scenarios.

The Mid-Autumn Festival, also known as the Reunion Festival, is a traditional festival popular among many ethnic groups in China. It is held on the 15th day of the eighth month in the lunar calendar, which is today, September 6th. It is one of China's four major traditional festivals, along with the Spring Festival, Tomb-Sweeping Day and Dragon Boat Festival.

The National Day of the People's Republic of China, referred to as National Day or National Day in China, is a festival established to commemorate the founding of the People's Republic of China. The celebration date is set as October 1st every year.