There is no direct evidence that Huijue Optoelectronics offered G.654 optical fiber in 2020, though the company produces a wide range of fiber optic products.

Huijue Optoelectronics, officially Shanghai Huijue Network Communication Equipment Co., Ltd., is a professional high-tech optoelectronics company founded in 2000. The company specializes in R&D, manufacturing, and distribution of fiber optic communication equipment, including fiber optic patchcords, enclosures, main distribution frames (MDF), digital distribution frames (DDF), optical connectors, transceivers, adapters, couplers, attenuators, WDM series, and PDH/video optical multiplexers . Their products serve telecommunications operators, power industries, and various enterprise sectors, and are exported internationally. G.654 fiber, particularly the G.654.E variant, is a single-mode optical fiber with a pure silica core designed for long-haul, high-capacity terrestrial and submarine networks. It features low attenuation, a large effective area, and is optimized for C- and L-band transmission, making it suitable for 100G+ DWDM systems . By 2017, major Chinese telecom operators had deployed G.654.E fiber commercially, and by 2021, it was widely used in backbone networks . While Huijue Optoelectronics manufactures a broad range of fiber optic products, the available sources do not explicitly list G.654 or G.654.E fiber among their offerings in 2020. Therefore, it cannot be confirmed that Huijue Optoelectronics had G.654 optical fiber available at that time. For precise verification, contacting the company directly or reviewing their 2020 product catalogs would be necessary.