Prag Bosimi Synthetics Limited manufactures polyester filament yarn and related products in India. Incorporated in 1987 as a joint sector venture between the Assam Industrial Development Corporation Limited and the H. B. Vyas Group, the company operates from its headquarters in Mumbai with a manufacturing plant in Sipajhar, Assam, and serves markets primarily in the North East, West Bengal, and Assam. It produces texturized, dyed, dope-dyed polyester filament yarns; polyester partially oriented yarn (POY); corrugated boxes via its packaging unit; readymade garments under the Bosimi brand; and knitted fabrics, with operations segmented into packaging, garments, knitted fabrics, and others. The company maintains dual-feed capacity for raw materials PTA and DMT, supported by in-house facilities for paper tubes and plastic packaging accessories. In recent developments, Prag Bosimi Synthetics appointed Ms. Bina Advani and Mr. Amarjyoti Bhagwati as independent directors in August 2024, changed its registrar and share transfer agent to MUFG Intime Private Limited from Link Intime, installed new machineries worth Rs 22 crore during 2017-18 with commercial production starting in 2018, and launched the Bosimi Apparel division in 2015-16 featuring varied yarn deniers such as 30, 50, and 75 along with twisted and dyed assortments.