The GB/T 6672-2001 standard specifies a method for determining the thickness of Plastic films and sheets using mechanical measurement. The standard applies to all types of Plastic films and sheets, including plastic materials used in the fields of Encasement, Electronics, Construction, etc. For measurement, thickness measurement is carried out under specified conditions by using appropriate mechanical measurement equipment. The purpose of this standard is to ensure accurate and reliable measurement of the thickness of Plastic films and sheets to meet the requirements during product design and manufacturing.