Chengde Longzhida has independent intellectual property rights. The calorimeter verification device produced by Chengde has complete functions, stable and reliable performance, and is effectively used by Chengde Metrology and Testing Bureau.

Chengde Longzhida Intelligent Water Mixer has completed the construction of Taiyuan Iron and Steel Group Company's constant temperature and pressure water mixer system construction integration project. This construction uses our company's HSZ series of constant temperature and pressure water mixing equipment, this series of intelligent water mixers It is an electromechanical integrated device that uses microcomputer control technology, uses temperature sensor detection and feedback, and controls solenoid valves to automatically adjust output water temperature. It has accurate readings, low price, easy installation, quality assurance, intelligent, automatic water temperature control, and water saving , Energy saving, constant temperature and pressure water supply. Chengde Longzhida intelligent water mixing equipment is widely used in factories and mines and has won unanimous praise from customers.