Qingdao Shuanghu Group (the former Third Rubber Products Factory of Rubber Group) was founded in 1968. It is one of the earliest enterprises engaged in rubber products and rubber conveyor belts in China, the largest enterprise in China, and the earliest enterprise to develop and produce corrugated side-block conveyor belts with large inclination.

Since the establishment of Shuanghu Group, in the spirit of "innovation, honesty and carefulness" and with an enterprising and realistic style, it has been constantly pioneering and innovating in the past ten years. Now it has become a comprehensive enterprise integrating production and transportation machinery, casting machinery processing and manufacturing, and rubber products. As a member of China Rubber Industry Association, it is the only company that has obtained the certificate of "patent for side conveyor belt" and passed the ISO9002 international quality system certification.

The products produced by Shuanghu Group are mainly composed of conveying machinery and casting machinery. Among them, the conveying machinery includes light conveyor, buried scraper conveyor, screw conveyor, roller conveyor, bucket elevator, DJ large inclination conveyor and DJ. JB inclined side conveyor, mining belt conveyor, belt conveyor, adjustable climbing belt conveyor, mining machinery, mesh belt conveyor, metallurgical machinery, mining belt conveyor, telescopic belt conveyor, special belt conveyor for coal mine, grain conveyor, inclined belt conveyor and LB screw conveyor. Foundry machinery includes ZJ0 12 wallboard forming machine, Z23 series solid forming machine, Z2520 rotary table vibration forming machine, rubber crawler for casting shot blasting machine, patterned conveyor belt with high friction pits, cold air cupola, hot air cupola, series dust collectors, pulse bag dust collectors, back-blowing bag dust collectors, cyclone dust collectors, XDP low-resistance dust collectors, LMF-II pulse high-pressure dust collectors, etc.