Handling of Quality Issues: Response Time: Respond within 2 hours after receiving customer feedback and provide a solution within 24 hours. Return and Exchange Policy: In case of confirmed product quality issues, free returns and exchanges are available within 7 days, and the round - trip shipping costs will be borne. Technical Support: Provide free splicing training, network optimization suggestions, and 24/7 online technical consultation. Warranty Period: The product comes with a 5 - year warranty

Logistics Responsibility: By default, Jinlong Optoelectronics entrusts a third - party logistics company (such as SF Express, Deppon) for distribution and assumes the transportation risks; customers can also specify the logistics provider. Protection Measures: Use wooden boxes or iron trays for packaging, fill the inner layer with shock - proof materials, and wrap the outer layer with a waterproof film to ensure that the optical cable is not affected by extrusion or moisture during transportation. Coverage: Domestically, it covers 31 provinces, municipalities, and autonomous regions. Internationally, it can be shipped to regions such as Southeast Asia and the Middle East. The transportation cycle is usually 3 - 7 days (domestic) or 7 - 15 days (international).

Cost Control: By independently producing optical fiber preforms (a subsidiary of Jinxingtong) and conducting large-scale production (with an annual output of 10 million core-kilometers), the unit cost is reduced . Differentiated Strategy: Provide customized solutions for different scenarios. For example, recommend G.652D optical fiber with low attenuation and high bandwidth for 5G base station construction, and at the same time, match it with cost-effective sheath materials to balance performance and cost. Long-term Cooperation Preferential Policy: For customers with an annual purchase volume exceeding 500 kilometers, offer a 5%-10% price discount and give priority to ensuring production capacity.

Under the environment that complies with the design specifications, the service life of Jinlong Optoelectronics' optical fiber and cable can usually reach more than 20 years. For example, through optimized structural design, the GYXTS loose tube armored cable can still maintain stable transmission performance during long-term use. For extreme environments (such as high salt fog, strong acid and strong alkali areas), special sheath materials (such as metal armor, anti-corrosion coating) can be customized to extend the service life.

Golden Dragon Optoelectronics' optical fiber cables have passed rigorous environmental performance tests and can adapt to complex environments such as high temperatures, humidity, and strong electromagnetic interference. For example, the GYFTY33 cable maintains attenuation changes within 0.05 dB/km during low to high temperature cycling tests from -40°C to +70°C. It features a dual armor design (steel wire + steel tape) and a five-layer protective structure, effectively resisting rodent bites, mechanical shocks, and electromagnetic interference. Additionally, the outer sheath of the product typically uses LSZH (low smoke zero halogen) or flame-retardant PVC materials, offering moisture resistance and flame retardancy. The insulation resistance remains no less than 2000 MΩ·km after 24 hours of water immersion, with a dielectric strength exceeding 15 kV.