Notice of HolidayApril 2,2022 Notice of Holiday Pls. note our factory will be closed for the Tomb-Sweeping Day from Mar 3th, 2022 to Mar 5th, 2022. Emails will be checked daily and enquiries will be answered during shutdown period, but all the shipping companies stop service during this period. Previous New Product introduction —Portable Density MeterNext Application of Personal Electrostatic Eliminating Alarm