This is an inquiry message about sf540m90n in the 108th China Canton Fair. (这是一条买家关于"sf540m90n"的询盘信息,来自第108届中国广交会。)Inquiry Message (询盘信息) sf540m90n is the filter element in this unit serviceable? Contact Info (联系信息) roland cross 2149 ruffner road irondale, AL 35210 USA Company: norfolk southern corp Phone: 205-951-4828 E-mail: roland.cross@nscorp.com roland.cross@nscorp.com