1. market condition
What as the car in recent years comfortable sex asks is ceaseless rise, the measure that car electric machinery installs on a car is increasing also, deploy door window to rise fall implement electromotor (common says to shake window electric machinery) dynamoelectric window system is be regarded as standard fittings to choose by foreign most model. In recent years, manufacturer of production of a lot of cars also begins in admiral of a lot of cars dynamoelectric window regards a standard as configuration, optional configuration serves as on the model such as other car, passenger car, make shake the demand of window electric machinery rises ceaselessly, countrywide glass rose 1999 fall implement crop is 313. 60 thousand, among them dynamoelectric litre fall implement occupy 25 ％ about. As the car large-scale draw near what enter a family increasingly, dynamoelectric litre fall implement the rate that holds can rise stage by stage, predict 2005, the total output of passenger car and car will amount to 1.8 million or so, shake the demand of window electric machinery will be very considerable.
2. evolves into the history
Abroad shakes traceable of window electric machinery 60 time end at the beginning of 70 time, volume of generation product is larger, the structure is complex, without waterproof design, 70 time initial stage begins to be in a few in the configuration on high-grade car. The 2nd acting product relatively generation product is reduced greatly on bulk, increased osculum at the same time, 70 time begin large-scale configuration since end, its are improved model still own share of one share market up to now, 90 time initial stage of our country introduce the product that assembles a car to be this generation product mostly. The 3rd acting product at 80 time end the market puts in at the beginning of 90 time, its characteristic is a structure compact, use breathe freely velar technology, waterproof properties is advantageous, electric machinery function is stable, reliable, service life is long, for product of 90 time main aspect, still hold the market up to now main portion. The 4th acting product puts in the market at 90 time end, because use new material new technology in great quantities, incline to of its component structure at unifinication, bulk is reduced further, weight is reduced greatly, can configure module of the electron that prevent clip according to need, beginning to replace the 3rd acting electric machinery in abroad. At present abroad is developing the Five Dynasties to exceed small-sized electric machinery, predict 2006 the left and right sides can put in the market.