1. Guangdong Hongda Blasting Co., Ltd.: The company is a listed company providing stripping service for open-pit mining, and has the qualification of general contracting of mine engineering construction and commercial blasting operation unit (commercial blasting operation unit license).
2. Huaibei Blasting Technology Research Institute Co., Ltd. of China Coal Science and Technology Group: The company is the only institution specializing in the detection and inspection of civil explosives in China, and has the "three-in-one" qualification of inspection institutions, laboratories and measurement certification recognized by the National Certification and Accreditation Administration.