3D Systems DDD: With total sales of $653.7 million for the financial year 2014, the Zacks Rank #3 (Hold) stock’s portfolio boasts industry-leading 3D printing technologies like Stereolithography, Selective Laser Sintering and ColorJet Printing, among others.
Utilize the input text as a context reference, choose the right relationship between '3D Systems' and '3D printing' from the options.
Options: position held, industry, operator, legal form