Jinan Rail Transit Line 6 is the third east-west rail transit backbone line in Jinan City, Shandong Province, China. It runs through the main urban area, with a total length of about 40.1 kilometers and 33 stations. It will become a golden line to accelerate economic activities and the flow of production factors from east to west in Jinan urban area, bringing subway momentum to Jinan's "East-prosperity", "West-flourishing" and "middle-outstanding". The project started construction on September 29, 2021 and is expected to be opened in 2026. In the wave of upgrading rail transit safety standards, LASUN B1 level communication cables, wires and cables and other products have successfully won the bid for Jinan Metro Line 6 project with excellent flame retardant performance and technological innovation, injecting a solid and reliable "safety gene" into this urban underground transportation artery.
>> Meets the strict requirements of the national standard and defines a new standard for high safety cables
LASUN B1 grade cables strictly comply with the national standard GB 31247-2014 "Classification of Combustion Performance of Cables and Optical Cables", and comprehensively exceed the standard limits in core safety indicators such as flame spread, peak heat release rate, peak smoke production rate, and total smoke production within 1200 seconds. In scenes such as subway tunnels and stations where people are dense and evacuation environments are complex, once a fire occurs, LASUN B1 level cables can effectively suppress the vertical spread of the fire, reduce the release of toxic smoke, and strive for golden time for passenger evacuation and fire rescue.
>> Self-produced high flame retardant materials, innovative strength certified at the provincial level
As the parent company of LASUN brand, Anhui Lasun Optic-Electric Co.,Ltd. (referred to as LASUN) adheres to research and development innovation, and has achieved independent and controllable control of the entire industry chain from high flame retardant materials to finished cables. The independently developed B1 level high flame retardant polyolefin cable sheath material adopts a halogen-free flame retardant formula, with high oxygen index, excellent tensile strength, low smoke, halogen-free, weather resistance, corrosion resistance and other characteristics. It has passed the 3P laboratory performance certification and meets the dual standards of EU CPR B2ca level and GB 31247-2014. In 2025, this material will be recognized as a "future industry landmark product" by the Anhui Provincial Department of Industry and Information Technology due to its outstanding innovation strength and technological advantages, becoming a benchmark in the field of new materials in the province.
>> Adhere to brand leadership and empower high-quality development of the industry
The LASUN brand has always been driven by technological innovation, with a deep focus on the research and production of B1 grade cables. Through continuous optimization of flame retardant polyolefin formulas and upgrading production processes, LASUN has achieved full range B1 level flame retardant performance standards for its three major cable products: communication data cables, optical cables, and power cables. Its products not only meet the requirements of domestic mandatory standards such as GB 31247-2014 and GB 51348-2019, but also benchmark the EU CPR certification system to provide international quality assurance for rail transit projects along the "the Belt and Road".
>> Escort Line 6 project, showcasing industry leadership
In the Jinan Metro Line 6 project, LASUN B1 level cables have been successfully applied to the three core systems of power transmission, signal control, and emergency lighting due to their stable performance. The B1 level flame-retardant security cables, backbone optical cables, communication cables, and other products supplied by LASUN are suitable for the special environment of humid and vibrating subway tunnels, ensuring long-term stable and reliable operation, and providing solid cable support for the safe and efficient opening of Jinan Metro Line 6.
In the future, the LASUN brand will continue to deepen its cultivation in the field of high safety cables. With independent and controllable material research and development capabilities and continuous improvement in manufacturing processes, it will promote the upgrading of the cable industry towards green, high-end, and intelligent directions, and contribute the "Chinese solution" to the safe operation of global urban rail transit.
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