Shenzhen HHD Technology CO., LTD which is focus on Intelligent lock and locking solutions since 2009.We offer a wide product range of intelligent locks in meeting the different operation needs, including the GPS padlock, Oil valve lock, Bluetooth padlock, Fingerprint lock, QR code lock, Container door lock and Temperature tag etc. Each unit can communicate through GSM,RFID,NFC, Bluetooth and a feature-rich web platform, sending you accurate tracking information, lock status and real-time warning alerts according to you predefined events.The company's products are self-developed and designed by our professional team, meanwhile combine with more than 9 years' productions experience we can offer the customers one-stop customization services!Professional equipment's, strict quality system(IQC,QA,QC,ISO9001:2008)to meet international standard and compliance. Strategic business operations and partners covering India, the United States, United kingdom, Switzerland, Africa and the Middle East. In these countries, who are widely used in applications of the petrochemical industry, customs clearance, logistics distribution, power control, financial security, coal transportation etc.