Dr. Panadda SILVA, NIMT Deputy Director and Metrologists welcomed Quality Auditor from Thailand Industrial Standards Institute (TISI) and Technical Experts from National Metrology Institute of Japan :NMIJ, Japan that consists of Mr. Masaaki UEKI, Senior Researcher, Mass Standards Group, Technical Expert on Mass Laboratory, Dr. Kenichi FUJII, Prime Senior Researcher, Leader, Mass Standards Group, Technical Expert on Density Laboratory and Dr. Kazumi INAGAKI, Group Leader, Environmental Standards Group, Research Institute for Material and Chemical Measurement, Technical Expert on Inorganic Analysis Laboratory on the occasion of re-assessment at Phadungmat building, NIMT, Pathum Thani province.