Dongguan Guoling Machinery Co., Ltd.(short for Guoling) is affiliated to Shixi Enterprise (International) Organization,is a professional manufacturer of screw making machinery, located in Dongguan ,Guangdong Province,China.Founded in 1980,Guoling is a united economic enterprise specializing in science researching, developing, manufacturing, trading and investing.

With strict and complete quality management and acceptance inspection systems guaranteeing product quality, the machines obtained the international accreditation of ISO9001 in 2000 and got the certification ''Declaration of Conformity'' in 2007. It grew from studying and introducing foreign advanced technology such as from Japan, now is constantly developing and improving independently, owing many patent technologies with own intellectual property.

Guoling is a member of Chinese Fastener Committee of Industry &Commerce,Chinese Fastener Associations, Chinese Standard Parts Technology Information Net and National Fastener Standardization Technology Committee. Besides, Guoling was conferred "High & New Technology Enterprise" and assesed as one of Guangdong's 100 Preponderant Intellectual Property Enterprise by the Science & Technology Bureau of Guangdong Province in 2003.In the same year, "Non-clamp 2 Die 3 Blow Parts Cold Heading Former" developed by the company was awarded "Special Prize of New Superior Products" by China General Machine Components Industry Association and ''Gold Prize'' in the 16th National Invention Exhibition.
At present, the main products include: 2 Die 3 Blow parts former, 2 Die 3 Blow parts former with P.K.O, 2 Die 3 Blow parts former clamp,Heading Machine,Hollow Heading machine,Thread Rolling Machine,Slotting Machine,End Cutting Machine.