GB/T 1303.4
GB/T 1303.4 (Industrial rigid laminated sheets based on thermosetting resins for electrical purposes - Part 4: Requirements for rigid laminated sheets based on epoxy resins)· GB (China) · 34 materials
GB/T 1303.4 (Industrial rigid laminated sheets based on thermosetting resins for electrical purposes - Part 4: Requirements for rigid laminated sheets based on epoxy resins)· GB (China) · 34 materials