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    A drone made of bamboo-based composite materials is seen in flight. Photo: official WeChat account of Long BambooA Chinese team has developed a drone using bamboo-based composite materials after making a breakthrough in a technique that allows bamboo to be flattened while preserving its tough outer layer. The drone has completed multiple test flights, China Central Television (CCTV) News reported.
Long Bamboo, a company based in East China's Fujian Province, developed the technique that preserves the bamboo's tough outer layer and allows different parts with different densities of the material to be used according to their properties, improving its overall performance.
In the past, the outer skin of bamboo was often treated as leftover material and eventually burned into low-value bamboo charcoal.
According to a company release in February, bamboo-based composites now make up more than 25 percent of the entire drone, while its fuselage skin is made entirely from the company's own high-performance bamboo composite material.
The bamboo-based material also offers a major cost advantage, costing only about one-quarter to one-tenth as much as aviation-grade carbon fiber. After the drone is retired, the material can naturally degrade, allowing it to effectively "come from nature and return to nature."
The team spent four years building data models, upgrading equipment and refining the material. The resulting drone has a wingspan of more than 2.5 meters but weighs only about 7 kilograms, and has already completed multiple test flights, according to CCTV News.
Bamboo was traditionally used mainly in products such as tableware and furniture. Now, however, the material is finding its way into a wider range of industrial applications. Bamboo fiber is being used in automobile interiors, while bamboo-based materials are also being explored as possible substitutes for plastics, glass fiber and carbon fiber in some applications. 
China has the world's largest bamboo resource base, with about 7.56 million hectares of bamboo forests nationwide. The country also ranks among the world leaders in bamboo resources, bamboo cultivation technologies and the development and utilization of bamboo materials, per CCTV News.
Global Times 
。    本报讯 5月31日，全区电动自行车安全隐患全链条整治行动动员部署会议召开。会上，部署了全区电动自行车安全隐患全链条整治行动重点任务。         　　据了解，此次整治行动围绕落实电动自行车“一件事”六个重点任务，坚持标本兼治、疏堵结合、创新驱动、齐抓共管，全面提升电动自行车生产、销售、使用、停放、充电、报废回收等各环节安全水平，有效防范遏制电动自行车安全事故，2025年底前形成全链条管理长效机制。         　　会议要求，各成员单位要加强组织领导，结合自身工作职责，认真梳理、分析当前全区电动自行车安全管理存在的问题和薄弱环节，抓紧制定出台本部门实施方案和治理方案，量化任务指标、明确时间节点，不打折扣、逐一落实。要坚持疏堵结合。消防、公安、综合执法等部门要加强联合检查，严查违规停放充电行为，依法对“进楼入户”“飞线充电”等违规停放充电行为开展执法查处、检查劝阻和宣传提示。同时要加强电动自行车停放充电场所使用管理，分类施策检查消防安全条件，满足消防救援需求。要坚决打非治违。市场监管部门要严格产品质量监管，对电动自行车、蓄电池、充电器等生产企业，逐一审查生产资质，常态化开展产品质量抽查，督促销售企业严格进货检查验收。         　　会议强调，要务实工作作风，全面压实责任。各乡镇（街道）、相关部门要按照“党政同责、一岗双责、齐抓共管、失职追责”和“管行业必须管安全、管业务必须管安全、管生产经营必须管安全”的要求，逐级逐个压实监管部门、管理单位和使用人员的责任，坚决确保整治行动取得实效。

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