Guanyu is a professional manufacturer of plastic injection products with 24 years experience. Our factory equipped with advanced injection machine, excellent R&D team, professional laboratory, strict quality control system and supply chain control system. We started to provide OEM service for Amazon in 2013 and Grainger in 2015. By virtue of our excellent R&D team and reliable factory, we continue to provide high-quality products meeting customers’ requirements and creativities.


  • 01

    Companies of Global 500 select Guanyu as their partner

  • 02

    Engage in the industry of plastic storage for over 24 Years

  • 03

    Win 45 patents and 5 those for invention

  • 04

    Professional team of engineers and designers

  • 05

    Complete set of strict quality control system from plastic raw materials to finished products.

  • 06

    Skilled workers: A group of skilled workers with more than 3 years experience.

  • 07

    Guanyu factory is equipped with 18 advanced injection machines and hot welding machines.


Guanyu is a manufacture base of an American top plastic storage brand, a China top husbandry brand and some global 500 companies. We could design and manufacture as your requirements which product weight between 5g to 18kg.

  • OEM

  • OEM

  • OEM


Guanyu started to provide OEM service for Grainger in 2015. W. W. Grainger, Inc. is an American Fortune 500 industrial supply company founded in 1927 in Chicago by William W. (Bill) Grainger. He founded the company in order to provide consumers with access to a consistent supply of motors. The company now serves more than 3 million customers worldwide with offerings such as motors, lighting, material handling, fasteners, plumbing, tools, and safety supplies, along with inventory management services and technical support.

  • Successful Case

  • Successful Case

  • Successful Case

  • Successful Case


  • OEM Customers

  • OEM Customers

Contact Us

E-mail: allen@giscostorage.com

Tel.: +86 532 8789 9622

Fax: +86 532 8789 6798

Add.: No.624, Qingshan Road, Qingdao, Shandong Province, China

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