This Technical Report is intended to provide users with guidance to understand methodologies and to evaluate carbon footprint of products (hereinafter referred to as CFP), by quantifying the greenhouse gases (GHG) emissions (hereinafter referred to as CFP study) for Electrical and Electronic products (hereinafter referred to as EE products) based on life-cycle thinking. This TR is applicable to any type of EE products, which are new or modified (e.g. reconditioned, upgraded, etc.). This TR is based on the result of a comparative study on existing methodologies published or under discussion in representative international organizations. This TR is intended to be used by those involved in design and development of EE products, and their supply chains regardless of industry sectors, regions, types, activities and sizes of organizations. This TR may also be used as guidance to prepare a PCR of each product category in EE sector. NOTE 1 In this TR, ISO/DIS 14067, ITU-T L.1400 and L.1410, GHG Protocol Product Life Cycle Accounting and Reporting Standard (hereinafter referred to as (GHG Protocol Product Standard), BSI PAS 2050, and other international, regional and national initiatives are studied and compared since these documents and initiatives are regarded as the most influential ones worldwide at the moment. NOTE 2 This TR refers to requirements relevant to EE products in the existing documents and quotes them with boxes. The boxes are followed by guidance applicable to EE products. The documents which this TR refers to (e.g. ISO/DIS 14067) may be revised in the future. These boxes do not capture the full text of the standards referred to and readers are encouraged to read these standards for thorough understanding of their requirements. NOTE 3 This TR is programme-neutral. If a programme (e.g. a specific Carbon Footprint of Products (CFP) Initiative) is applicable, some requirements of that programme may be additional to the guidance provided in this TR.