Welcome to these forums, Gary; we are glad you joined us!
Loncin has a good reputation for manufacturing engines. Can you tell us more about this motorcycle? How large is the engine? How big is the fuel tank? Several components on this motorcycle seem similar to parts on the Hensim 250, and one of the Roketa bikes.
Spud
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Spud
"Never argue with an idiot. He will drag you down to his level, and beat you with experience."
Mark Twain
2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220
Mods made to my Zongshen ZS200GY-2:
http://www.chinariders.net/showthread.php?t=6894