Shandong Shuangyi Technology Co., Ltd.

Company overview

Shandong Shuangyi Technology Co., Ltd. designs, develops and manufactures advanced composite products, with sales and service also forming part of its business. Founded in 2000, the company is headquartered in Decheng District, Dezhou, Shandong Province, and is listed on the Shenzhen Stock Exchange under stock code 300690. Its product range includes drone structures, non-metal precision molds, wind-power composite components, lightweight vehicle parts, fishing boats and composite 3D-printed parts, covering civilian applications in energy, transport and marine activities.

Its Four-rotor UAV fuselage comprises three separately molded sections: the left rotor section, right rotor section and fuselage. The structure uses carbon fiber, with PMI foam and carbon-fiber sandwich construction in the rotor sections and a one-piece, 0.5 mm carbon-fiber fuselage body. Manufacturing uses a mold consisting of more than 50 modular units to maintain structural integrity. The stated 680 g weight refers to the whole aircraft.

The company's eight-rotor UAV hardware includes a fuselage and aircraft arms, with stated product dimensions of 1100 × 1100 mm. The fuselage description specifies carbon fiber processed using VARI, while the arms use carbon-fiber prepreg formed integrally through an internal expansion method. However, the product's material field specifies glass fiber, leaving its material specification inconsistent. The arm construction is described as combining thin walls and low weight with structural strength, and an invention patent application is reported for its manufacturing method.

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