Shengnobelium hardware and building materials stor It is a high-tech enterprise which integrates the research and development, production, sales and technical support of electronic intelligent door lock. It is one of the manufacturers of electronic intelligent door locks in China. After years of development, through its own continuous innovation and accumulation, the products have covered the world. The company adheres to the principle of quality first and customer first, and serves the vast number of users wholeheartedly.