GBF is a registered trademark for construction products, which belongs to the 19th category of approved goods. The trademark is valid until April 13, 2016. This trademark was registered by Changsha Superstar Lightweight Building Materials Co., Ltd. on April 14, 2006. Such products are widely used in construction, transportation, and military engineering. The products have passed the expert appraisal organized by the Ministry of Construction, confirming that this scientific and technological achievement "the overall technology is at the domestic leading level, and the developed GBF series of construction products fill the domestic gap." .