According to the ministry of industry and information technology of the People's Republic of China in 2018 no. 23 announcement, "PTFE plate" and "polyvinylidene fluoride (PVDF) plate" light industry standards have been approved and announced, the implementation date is September 1, 2018.
The standard number of PTFE plate is QB/ t5257-2018, which replaces the standard QB/T 3625-1999. The standard specifies the classification and marking, requirements, test methods, inspection rules and marks, packaging, transportation and storage of PTFE plates. Standard is applicable to the ptfe suspension resin as the main raw material, the use of die pressing molding plate or die pressing method, isopressure method into the blank, after turning processing plate.
The standard number of polyvinylidene fluoride (PVDF) plate is QB/ t5259-2018. The standard specifies the classification, requirements, test methods, inspection rules and marks, packaging, transportation and storage of polyvinylidene fluoride (PVDF) plates. The standard is applicable to the extruded or molded plates made of uniformly poly vinylidene fluoride (PVDF) as raw material, and is not applicable to the plates made of poly vinylidene fluoride (PVDF) with fillers or reinforcement materials.