Utilize the input text as a context reference, choose the right relationship between 'Stratasys' and '3D Printing' from the options.
Options: product/material produced, creator, distribution format, platform

Stratasys Ltd. 23/07/2015 | Press release Stratasys’ Solidscape and Kangshuo Group Launch Market Expansion in China With Largest 3D Printing Service Bureau Network
product/material produced