Sum Hing (HK) enterprise company is a production enterprise,which specializes in all kinds of cartons,plastic bags,color cases producing.It’s a asole-invested enterprise,the factory was set up in Dongguan city China in 1999.The total area of building which built by ourselves is over 20000 square meters.Employing more than 1200 personel including 150 professional technicians and 92 professional engineers.We owned advanced equipment and technology.We have been carried out ISO9001:2008 quality managerment systems-requirement,ISO14001:2004 environmental management sy