Originally designed by Swearingen as the SA-30 Fanjet, which was to be sold by Gulfstream as the SA-30 until Gulfstream withdrew from the project. Swearingen was then endorsed by the Jaffe Group and the aircraft was renamed the SJ-30 (later "SJ30-1). The SJ-30 first flew on February 13, 1991. Swearingen then formed a joint venture with Taiwanese investors and formed the China Swearingen Aircraft Corporation.
subsequently decided to modify the original design as the SJ30-2, with a 4-foot-4 m (1.32) longer fuselage and wings slightly longer. The prototype was modified and flew in the new configuration in November 1996. After many delays and problems began testing aero / stability control testing, and operation of test systems) were built and went into the design certification testing. However, in April 2003, the SJ-30-2 crashed during test flights, causing delays in the certification program. After a series of additional design changes and years of flight testing, the SJ30-2 was finally certified by the FAA in October 2005. The first customer delivery took place in 2007. Sino Swearingen was acquired by investors from Dubai in 2008. The Dubai-based company is the majority shareholder of Sino Swearingen, with the government of Taiwan. The company name was changed to the Corporation Emivest Aerospace. Emivest Aerospace has begun accepting orders for its new SJ30, the fastest light jet and greater autonomy in the world. This aircraft can accommodate up to six passengers plus a driver (requires a driver to be operated only). A unique feature of this aircraft is that it maintains a "Sea Level Cabin" to 41,000 feet (due to 12 psi differential pressure), which reduces some of the effects of jet lag on long trips crossing more than 2,800 miles without scales at a speed of up to 630 mph (1008Km / h), and its price is 7.5 million. The Jet lag, also known as jet lag syndrome or spindles schedules, is an imbalance occurred between a person's internal clock (which marks the period of sleep and wakefulness) and the new schedule that is set to fly long distances through various time regions. The internal clock of the person tends to prevail, therefore, to travel east, you will not sleep when the night has come and, in the case of travel to the west, you will sleep in the daytime. Our circadian rhythm is less confusing if you travel west for a trip to the west extends the experience of a less distorted body clock day-night cycle. However, if you travel east of traveling in the opposite direction to the body clock.
More information at: http://www.sj30jet.com/ 
