What is the relationship between Stratasys and 3D printing in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Following the longstanding success of using Stratasys PolyJet and FDM 3D printing for prototyping applications, the company now deploys its Fortus 3D Production Systems to expand its direct manufacturing services to customers.

Answer: product_or_material_produced