Refer to the input text as context and select the correct relationship between 'Stratasys' and '3D printing' from the available options.
Options: parent organization, chairperson, distributed by, product/material produced

More Tech Earnings Stratasys cuts outlook; says easy growth over for 3D printing First, the software company reported a net loss of $42.3 million, or $1 per share ( statement ).
product/material produced