电容器 25KVAR PHMKPG660.3.22.90 EM-technik EM-technik 2N200MN4018PT D06 NPT1/8" PTFE EM-technik EM-technik 2N200MN4018PV D06 NPT1/8" PVDF EM-technik EM-technik 2N200MN4014PF D06 NPT1/4" PFA EM-technik EM-technik 2N200MN4014PP D06 NPT1/4" PP EM-technik