In terms of products, environmental protection has become a common external pressure and development trend faced by global cable manufacturers in recent years. The United States, Japan, and Europe are leading the world in the development and manufacture of environmentally friendly cables, and consumer technology is relatively mature. The ROHS Directive formulated by the European Union urges that, from July 1, 2006, the use of harmful substances such as lead, mercury, cadmium, hexavalent chromium, polybrominated diphenyl ethers, and polybrominated biphenyls will be curbed in newly-launched electrical and electronic equipment; After the successful development of environmentally-friendly cables by Fujikura Cable, the government actively promoted the release of environmentally-friendly cable standards. Subsequently, major electrical companies in Japan have also begged that from March 2006, fiber optic cables used in various electrical appliances must pass relevant environmental certifications. .