As the national enterprise group and one of 100 key enterprise groups in Shandong Province, Conglin Group administers Aluminum Material Factory with annual production capacity of 150 thousand tons, ductile cast iron pipe Factory with annual production capacity of 150 thousand tons, Cement Factory with annual production capacity of 6 million tons,which all pass ISO 9001 Quality System Certification. the group owns provincial enterprise technical center and the only industrial aluminum material ...