WTL Company profile
WTL is professionally offering quartz crystals, filters, resonators, oscillators, TCXO, VCXO, SAW device, following is our product list:
 -HC49 series (HC49U/HC49S/HC49SMD, 49SMD 4pads)
-SMD crystal 4 pads (7*5mm, 6*3.5mm, 5*3.2mm, 4*2.5mm, 3.2*2.5mm, 2.5*2.0mm,2.0*1.6mm)
- SMD crystal 2 pads ( 8*4.5mm, 7*5mm, 6*3.5mm, 5*3.2mm,3.2*2.5mm) 
-Watch crystal / cylinder crystal/ tuning fork(2*6mm,3*8mm,2*6mm frog type. SMD3.8*8.0mm, 6.9*1.4mm, 4*1.5mm, 3.2*1.5mm,4.9*1.8mm, 2.0*1.2mm )
-UM-1.UM-5. UM-1 Jacket, UM-5 Jacket
-MCF filter
-Oscillator(full/half size,7*5mm,5*3.2mm,3.2*2.5mm,2.5*2.0mm)
-TCXO,VCXO (7*5mm,5*3.2mm,3.2*2.5mm)
-Ceramic resonator & filter(ZTT,ZTA,ZTB,CRB)
-SAW DEVICE(TO39,F11,QCC8C,SM2,5*3.5mm3.8*3.8mm,3*3mm)
Represents below brand
EPSON, CITIZEN, SII ( SEIKO), TXC
Popular types: 
EPSON: MC146, FC-135
CITIZEN:CM 315, CM200S
SII: SSP-T7
TXC: T11,T10