KERONG Smart is a professional manufacturer specializing in the research development, production sales, and service of smart locksmart padlock,glass door lockU-lock and other smart electronic lock. Over the years, KERONG Smart has been committed to product development as well as personnel training to ensure high-quality sales and after-sales service. Constantly investing in the most advanced technology equipment, and expertise to constantly keep our product range up-to-date. At the same time our employees are trained in the latest management techniques. This has enabled us to go from strength to strength, building a unique business model through strong and comprehensive marketing and after-sales support network. We also welcome OEM and ODM orders. Dedicated to three quality control and customer service. Our laboratory staff is always available to discuss your requirements and ensure complete customer. We are at your service and want to be one of your friends and business partners.