Behbudov Shavkat Husenovich; Yoqubov Muxriddin; Rakhimova Gulora Pirnazarovna; Matchanova Gulrukh Hayitmatovna; Mamatova Sayyara Shavkatovna. DEVELOPMENT OF A METHOD FOR OBTAINING POLYMER COMPOSITIONS BASED ON COLLAGEN TO INCREASE THE STRENGTH PROPERTIES OF THREADED JOINTS IN SEWING PRODUCTS. Euro. Sch. J. 2021, 2, 284-287.