... of the dampestmonth is 90%; 4.Places that are free from severe vibration or shock; 5.Environment exists without explosive medium, gas ... erode metal and destroy insulation; 6.Places that are free from rain or snow. Notice: (JMB,BJZ,DG,BZ and DM light ... . 5.During transportation, try to avoid impact, and far away from damp. During operation, pay attention to maintaining to ensure the ...