S. Sh. Tashpulatov
Tashkent Institute of Textile and Light Industry; Shandong Vocational University of Foreign Affairs
Uzbekistan

5 Shohjahon Street, Tashkent, 100100; 
Weihai Campus No. 788 Changjiang Road, Yintan Tourist Resort, Rushan City, Weihai City, Shandong Province, China, Postal Code: 264504

E. V. Lunina
A.N. Kosygin State University of Russia
Russian Federation

1 Malaya Kaluzhskaya Street, 1, Moscow, 119071

M. A. Nazarova
Namangan State Technical University
Uzbekistan

161, I. Karimov Street, Namangan, 160107

Z. U. Zufarova
Tashkent Institute of Textile and Light Industry; Namangan State Technical University
Uzbekistan

5 Shohjahon Street, Tashkent, 100100; 
161, I. Karimov Street, Namangan, 160107