Shenzhen Lifotronic Technology Co., Ltd. (688389.SH) has announced the receipt of a Medical Device Registration Certificate for In Vitro Diagnostic Reagents issued by the Guangdong Provincial Medical Products Administration. The newly approved product is the 25-Hydroxy Vitamin D (25-OHVD) Testing Kit, which utilizes immunochromatographic fluorescence assay technology. This kit is designed for the quantitative detection of 25-hydroxy vitamin D levels in human serum, plasma, and venous whole blood samples. It is primarily intended for clinical use in assisting the diagnosis of diseases related to vitamin D deficiency.