Millimeter wave absorbing materials VPC-60 and VPC-100 are designed and produced for the millimeter wave frequency band 18-40GHz. The material is composed of periodically arranged curved cones with a height of less than 10cm. In the working frequency band, the material has excellent absorbing performance, VPC-60 reaches below -45dB in the full frequency band, VPC-100 reaches below -50dB in the full frequency band, and has excellent low frequency performance (-40 dB @7-18GHz) Special It is suitable for measurement darkrooms with small space and high performance requirements.