Who can help me find out the datasheet of chip"GSC277&q

I'm looking for the datasheet of chip"GSC277". It's a product from the company SOSHIN. I already searched in its website, but failed to find it..
Who can help me?
Thanks in advance!

I tried to help you.
the link may be help you
http://info.tactnet.co.jp/soshin/e/form/

Thank you very much for your info!

Chaofan