TBT is an abbreviation for ‘Technical Barriers to Trade’ while this stands for the various obstacles in terms of trade that hinder the free movement of goods and services as the trading partner countries adopt and apply different Technical Regulations, Standards, Certification Procedures and Inspection Systems, etc. from each other. TBT agreement requires the membership countries to follow the rules of ‘Harmonization’ and ‘Transparency’, when the countries adopt technical regulations, standards, and conformity assessment. The rule of ‘Harmonization’ refers to WTO membership countries enacting and reviewing the following technical regulations, standards, and conformity assessment procedures in line with international standards. The rule of ‘Transparency’ is to reveal their operating standards and technical regulations, etc. based on enacted or legislative purpose.