A mechanism to allow hosts on the plaintext side of IP-layer encryptors to utilize Performance Enhancing Proxies on the ciphertext side of IP-layer encryptors is provided. The ionomeric composition preferably comprises an additive selected from the group consisting of silane coupling agent, organic peroxide, and combinations thereof. For providing an interface extension of a communication apparatus, messages exchanging extends between the communication and remote instant messengers via the local instant messengers. To prepare the cutting operation, the blade angle of a circular saw is matched to the required angle by rotating first and second subassemblies relatively to fence subassembly. Thus, the wireless charging device has the advantages of ease of use and portability.