1999
鈻睤ecember 1999, successfully passed ISO9002 certification.
鈻睮n December 1999, ISO9002 quality assurance system successfully passed certification.
鈻睮n 1999, Dongying Shandong petrochemical plant Lan fully operational.
鈻睮n December 1999, ISO9002 quality assurance system successfully passed certification.
鈻睮n 1999, Dongying Shandong petrochemical plant Lan fully operational.