I am a Robotics Engineer.
I am a Chinese from Malaysia.
I personally traded and imported stuffs from CHINA via various means, such as air cargo and sea freight.
I can help you to search for China's Chinese supplier and negotiate terms and requirements with them.
The way Chinese trades differs from Westerners/American, and I can help you in obtaining this sign printer.
As your project needs, I think you should focus on 4x4 ft ( 5x5ft ) screen printing capability first.
Looking for your favorable reply.
Thanks.
Regards,
Carfer