At the initial stage of the company's development, the main activity of the company was wholesale of refined products - supply of private filling stations, motor transport enterprises, boiler rooms and asphalt plants with diesel fuel, motor gasoline, fuel oil, bitumen and other petroleum products. Over time, for the convenience of customers, Zhavoronok XXI VEK LLC purchased the first gasoline truck and opened a new business - transportation of petroleum products. 

However, during the financial crisis of 2008, the situation in the transportation sector deteriorated, and the major players in the oil industry acquired their own fleet, which further aggravated the situation of private carriers. Due to this situation, the company's management decided to significantly reduce the number of vehicles, expand the area and staff for maintenance and repair of third-party carriers' vehicles.

Thus, since 2009, the main activities of the company Zhavoronok XXI VEK were the repair and maintenance of trucks, as well as installation of additional equipment. A fairly large part of the company's clients were carriers of petroleum products. Due to the fact that the field of transportation of dangerous goods has always been tightly controlled by regulatory authorities, Zhavoronok XXI VEK, knowing all the nuances from the inside, always found the best solution for their customers any problems

• Later, in a short time, having assembled a team of specialists, Zhavoronok XXI VEK was the first in Russia to develop, produce and test a test sample of speed limit device (SLD). In 2014, the new device was certified under the brand name Nadezhny Control, and its production - was established in the necessary volumes. At the moment, all vehicles carrying dangerous goods, as well as buses carrying organized groups of children must be equipped with such devices.
• Soon Zhavoronok XXI VEK established production of another necessary product - the main switch of automotive battery Nadezhny Contact. Its sales were also quite successful for the company.

In the process of development by employees of the company Zhavoronok XXI VEK was organized several stages of testing the device directly on vehicles. Due to the fact that Zhavoronok XXI VEK LLC is part of a group of companies, members of which are also transport companies, the tests of SLD Nadezhny Control 80 were conducted on different equipment. 

As a result, the workers of the company managed to create a reliable and durable device with maximum service life, easy to install on the vehicle. The advantage of the device is also in unification: Nadezhny Control 80 is suitable for installation on most types of vehicles.

Nadezhny Control 80 limitation device has type approval in accordance with the UN ECE Regulation No. 89 and is certified in the framework of the Technical Regulations of the Customs Union TR CU018/2011 "On the safety of wheeled vehicles", which allows to freely distribute and use it on all types of transport.