Guardian has been an original equipment manufacturer (OEM) and original design manufacturer (ODM) of garage door components and operators for over 30 years. Guardian’s reputation is synonymous with quality and enjoys the privilege of supplying products to market leading OEMs and dealers in over 30 countries, spanning 6 continents.

As residential construction and the market for sectional garage doors grew in the 1980s, Guardian founder and owner, Herbert Liu, was asked by garage door OEMs and hardware suppliers to help meet the increased demands for operators and door hardware. Operations for die castings, steel stampings and assembly were established to serve a partnership with DNS in Florida and provide operators for Clopay. Guardian and DNS later acquired the design rights of the garage door operator, producing it in Malaysia and Taiwan.

While hardware and operator supply expanded through an exclusive distributor in the USA, Guardian focused on the Australian and European garage door operator and hardware markets. Guardian became and remains the leading supplier to door OEMs in Australia and New Zealand with its residential rolling door openers, sectional garage door openers and rolling and section door hardware offerings. Pride is taken in being an exclusive component supplier to the largest European garage door manufacturer as well as the long-term relationships that have been built with large and small companies throughout the world.

In 2011, Guardian USA was established to directly serve North American garage door manufacturers, regional garage door distributors, and door dealers. The headquarters was opened in Santa Fe Springs, California along with an office and warehouse in Medley, Florida. In 2013, a Midwest office and warehouse was opened in the Chicago area.

In 2018 Guardian moved its US headquarters to El Segundo, CA.

2019 was a year of continued growth for Guardian. A new DC was opened in Arlington, TX. An R&D center was established in Hermosillo, Mexico. And the North American headquarters was moved to a central location in Richardson, TX to better serve to its growing customer base. With distribution centers in Southern California, North Texas, in the Midwest and on the East Coast, Guardian has committed to a sustainable growth plan in the USA and aims to further extend our services to our customers by providing local design capability, shortening lead time and providing a one-stop-shop for our customers.

Guardian takes pride in providing comprehensive customer support. Personal and company resources are made available to their customers and the importance of addressing customer needs as they arise is stressed. Guardian hopes to serve you, your family or your company to the best of their ability.


Guardian Access Corp. is the world’s most vertically integrated manufacturer of Garage Door Hardware and Residential Garage Door Operators. Steel stamping, plastic injection molding, steel rolling, bearing and roller manufacturing, cable sizing & cutting, electronics assembly and garage door operator testing and assembly are performed at the 216,000 sq. ft. Guardian Shanghai facility. Aluminum and zinc die-casting are made in 150,000 sq. ft. facilities in Shenzhen. All tooling is made at the each of the plants to ensure component quality. Guardian employs over 650 in manufacturing roles, including 30 engineers.

Guardian is committed to quality in its operations. ISO 9001 certification has been achieved and is maintained . ISO 9001 is recognized globally for its policies and processes that link the business and each employee to customer needs. Quality assurance decisions are made based on documented processes and systematically recorded data. Systems are audited regularly, performance reviewed and records kept are used as a means to improve the system.

Guardian garage door operators are designed and manufactured to the strict UL325 standard. Products are tested by UL and ETL and the plant is regularly audited by these organizations for compliance.

Guardian is an active member of IDA & DASMA as well as active supporter of local associations such as CODA and CSDDA.

Guardian’s corporate headquarters is located in Taipei City, Taiwan. It is a global company with locations throughout the world, including: Shanghai and Shenzhen, China, Richardson and Dallas, TX; City of Industry, CA; Chicago, IL and Medley, FL.