Founded in 1993, China InUse Office Products & Stationery Co., Ltd. is professional optoma projector manufacturer and optoma projectors dealer of office products and stationery. We have been accredited with product certifications including CE, EN 71-3, and ASTM, SGS is the third party inspector. Both factories have ISO9001:2000 Certification.

Optoma EP719 DLP Portable Projector 2000
The EP719 is a compact and durable projector that is designed to handle today's demanding multimedia needs with brilliant performance. Because it is essentially a neutral projector, it can virtually display any type of computer or TV - Video source that can be connected to its many connctivity ports. Use this to project a large image on a wall or, for best performance, a digital-ready projection screen. Contrast Ratio - (full on/full off) 2500 - 1 Lamp Type and Life 200W UHP lamp / Up to 2000/3000 (ECO) hour Throw Ratio 1.93 - 2.13 - 1 distance/width to Projection Screen Size (diagonal) 24.6 to 306 inches at a Projection Distance of 3.9 to 39.3 feet (1.2 to 12 meters) Projection Lens F=2.7~3.0; f=21.83 -23.81mm / 1 - 1.1 Manual Zoom and Focus Capable Projection Methods Front, rear, ceiling-mount, table-top (optional mounts may be required) 28dB Quiet Aspect Ratios -4 - 3 and 16 - 9 capable Wireless remote control D-sub 15 VGA output (functional in both normal and standby modes) / Computer Compatibilty XGA, SVGA, VGA, VESA, Mac, SXGA+ Resized Video Compatibility NTSC/PAL/SECAM, SDTV (480i), EDTV (408p), HDTV (720p, 1080i) Unit Dimensions (W x H x D) - 9 x 3.7 x 8.26 inches / Weighs 4.4 lbs.

Optoma H31 480p DLP Home Theater Projector
The H31 is HDTV compatible with 720p, 480p widescreen (854 x 480), 1080i, and DVI with HDCP output for maximum clarity. The 850 lumens and four-speed six-segment color wheel ensure superior color reproduction with deeper, richer blacks, detailed nuances, and a full palate of bright colors. The included adjustable color matrix lets you set reds, greens, and blues independently for a truly customized experience. Other features include multiple quick zoom presets, a digital lens shift with two positional memories, and automatic preset reloading whenever input signal resolution changes. Easy to setup and use, the projector comes with cables, remote, batteries, and more; it is backed by a two-year warranty (90 days on lamp). H31 features DarkChip2 DLP technology by Texas Instruments and 16: 9 aspect ratio to deliver an authentic movie theater experience within the comfort of your home. H31 is fully compatible with 480I, 480p, 720p and 1080I in both YPbPr and DVI-HDCP inputs. Its 850 lumens and 3, 000: 1 contrast ratio give you ideal home theater brightness and superior color reproduction.