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2018-12-20
annual national conference of mechanical seal industry in 2018
from december 12 to 14, the 2018 annual national conference of mechani...
2018-12-05
the 23rd china international paint exhibition
the 23rd china international coating exhibition opened in area a of gu...
2018-11-28
bauma china 2018 shanghai bmw construction machinery exhibition
bauma china 2018 (shanghai bmw construction machinery exhibition) open...
2018-11-15
2018 annual meeting of the petroleum chamber of commerce of the all-china federation of industry and commerce
on november 3, 2018, the annual meeting were successfully held in xia...
2018-09-27
application and development trend of material surface treatment technology in oil and gas equipment industry
on september 22, "oil and gas energy conference of the western expo", ...
2018-09-25
the 17th western china international expo 2018
from september 20 to 24, the 17th western china international expo was...
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