Igwe nju oyi nke China 21th nke 2010 emere na Beijing site na Apr.7-9.Ngwaahịa Holtop HRVs na ERVs, Plate na Rotary okpomọkụ na AHU nwere mmasị na ọtụtụ ndị ọbịa si ma ụlọ na mba ọzọ.
Mkpesa na Eprel 06, 2010
Oge nzipu: Mee-20-2010
Oge nzipu: Mee-20-2010