... OEM service offered 5)Factory price CD&VCD&DVD specialized supplier Shenzhen Guan Yu opto Electronics ... Ltd.Our factory produce CDR ,DVDR ,CD/DVD packaging. and monthly output reaches up to 20 ... the most advanced fully automatic CD-R & DVD-R production lines from Germany and Switzerland, and ... and the most accurate optical analyzer – CD and DVD CATS, which ensures GuanYu’s optical products have great ...