They are scammers it looks like.  Allow me to point out what I saw.  First, the whois came up with this:
Registrant:
	 tmapc domain@staff.siteem.com +86.01087380866
	 tmapc
	 chaoyangqu
	 chaoyangqu,beijinshi,CHINA 100000
Domain Name.com 
Record last updated at 2006-06-04 21
Record created on 2006/6/4
Record expired on 2007/6/4
Domain servers in listed order:
	 ns1.siteem.com 	 ns2.siteem.com 
Administrator:
	 name:(tmapc) 
	Email:(domain@staff.siteem.com) tel-- +86.01087380866
	 tmapc
	 chaoyangqu
\r
t chaoyangqu
beijinshi,
CHINA
 zipcode
Technical Contactor:
	 name:(tmapc) 
	Email:(domain@staff.siteem.com) tel-- +86.01087380866
	 tmapc
	 chaoyangqu
\r
t chaoyangqu
beijinshi,
CHINA
 zipcode
Billing Contactor:
	 name:(tmapc) 
	Email:(domain@staff.siteem.com) tel-- +86.01087380866
	 tmapc
	 chaoyangqu
\r
t chaoyangqu
beijinshi,
CHINA
 zipcode
The date created was 3 days ago!  Also, if you look on the bottom of thier webpage you'll notice the copywright 2001-2006, but with a different website!  When you check that website out, it doesnt exist.  Always investigate, you may find a real supplier, but only if you want to take the time to sort through all the bogus ones.
-Benjamin