WONJIN
4/7/2003 - 9/30/2008 (Engineering activities and technical knowledge and construction of devices have been done by this company and formalin unit is 100% *, acetaldehyde unit is 50% and pentaerythritol unit is 61% advanced)
Monenco
1392/3/25 until now (review of existing documents and continuation of engineering activities including basic engineering, detailed engineering, purchasing engineering and supervision are underway)
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