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    卧虎藏龙

    二手交易“避坑”指南_我的网站

    七宗罪

    一 |     

        
    Photos: Courtesy of Landspace
        Photos: Courtesy of Landspace
                  

    A rocket that once would have been discarded after completing its mission has now taken a different path - returning from the edge of space back to Earth. In the early hours on Wednesday, the Zhuque-3 Y2 reusable launch vehicle lifted off for a flight test, carrying not only a satellite payload but also a major test of China's emerging reusable rocket capabilities. After completing its orbital mission, the rocket's first stage attempted a controlled return and recovery, with its developers Beijing-based private firm LandSpace describing the mission as a key transition from technology verification toward engineering application for China's commercial aerospace industry.
    About 137 seconds after liftoff, the rocket’s first and second stages separated. The second stage continued its flight and successfully placed the Honghu-03 satellite, independently developed by Hongqing Technology, into its designated orbit. And at around 7:43 am, the rocket’s first stage successfully made a soft landing as planned at the Zhuque-3 landing site in Minqin county, Northwest China’s Gansu Province, marking the successful completion of the flight test mission.
    This mission marked China's first-ever recovery of a launch vehicle's first stage using landing legs, as well as the country's first land-based recovery of the first stage of an orbital-class launch vehicle, the developer highlighted.
    The achievement came shortly after China's Long March-10B reusable rocket successfully completed its maiden flight and a sea-based recovery test on July 10, marking a wave of breakthroughs in reusable launch technology. The parallel progress of state-owned and private aerospace players through different technical approaches is creating a dual-track development landscape for China's future low-cost and high-frequency space transportation, some aerospace experts told the Global Times.
        
    Photos: Courtesy of Landspace
        Photos: Courtesy of LandspaceDesigned to fly again

    Unlike traditional expendable rockets, which are discarded after a single mission, reusable launch vehicles are designed around an entirely different concept: a rocket should not only complete a launch, but also return safely and be prepared for future missions.
    According to LandSpace, for conventional expendable liquid launch vehicles, the rocket itself represents the majority of launch costs, while fuel expenses generally account for only 1-3 percent. The first stage typically makes up about 70 percent of the total rocket cost. As a result, repeated reuse of rockets - particularly the first stage - can significantly lower launch costs by amortizing the cost of the vehicle over multiple missions. For partially reusable rockets that reuse the first stage while discarding the second stage, the cost advantage becomes increasingly evident as the number of reuse cycles grows.
    The Zhuque-3 is a reusable liquid oxygen-methane launch vehicle independently developed by Beijing-based private aerospace firm LandSpace for future large satellite constellation deployment missions, according to the company's statement.
    The rocket adopts a two-stage configuration, with a diameter of 4.5 meters, a total length of 66.1 meters and a liftoff mass of about 570 tons. Its first stage is equipped with nine Tianque-12A liquid oxygen-methane engines, as well as recovery systems including grid fins, attitude control systems and landing legs, enabling autonomous return and soft landing after orbital missions, LandSpace said.  
    The Y2 mission was conducted on the basis of experience accumulated from the previous flight test, with improvements focused on recovery reliability, flight control and engine performance.
    LandSpace said it optimized the first-stage landing propulsion scheme by reducing the number of engines used during landing ignition, simplifying system design and improving reliability during the recovery phase. The company also added an autonomous safety control function capable of predicting landing points based on flight conditions and making corresponding safety adjustments.  
    The mission also further verified key technologies including the use of stainless-steel rocket structures, liquid oxygen-methane propulsion and landing-leg recovery systems.
    According to LandSpace, stainless steel provides advantages in manufacturing cost, processing efficiency, high- and low-temperature performance and post-recovery maintenance, making it suitable for reusable rocket development.  

    Photos: Courtesy of Landspace
        Photos: Courtesy of LandspaceMore than a single rocket's return

    The significance of Zhuque-3 Y2 extends beyond one flight test, as it reflects China's broader effort to develop reusable launch systems through multiple technological routes, according to Chinese experts.
    Kang Guohua, a senior member of the Chinese Society of Astronautics and a professor of aerospace engineering at Nanjing University of Aeronautics and Astronautics, told the Global Times that China has become the second country after the US to develop orbital-class rocket recovery capabilities.
    The US currently leads reusable rocket development, with SpaceX and Blue Origin advancing different recovery technologies. China, meanwhile, has seen both state-owned aerospace programs and private companies explore different technical pathways, creating a diversified development pattern, Kang said.  
    According to Kang, the parallel development of different approaches demonstrates the advantages of combining national strategic capabilities with market-driven innovation.  
    Pang Zhihao, a prominent Chinese space exploration expert and retired researcher from the China Academy of Spacecraft Technology, told the Global Times that the successful recovery of Zhuque-3 would carry special significance for China's private aerospace sector.
    A landing-leg recovery approach would mean that private aerospace companies have completed the full process of developing a large-capacity reusable rocket system, validating key technologies including stainless-steel structures, multi-engine propulsion and recovery systems, Pang said.  
    More to expect 
    LandSpace said the first stage represents a significant share of the total cost of a liquid launch vehicle. Through repeated reuse, the cost of each launch can be gradually reduced, while production cycles can be shortened and launch frequency increased.  
    Such capabilities are becoming increasingly important as countries and companies accelerate the deployment of large low Earth orbit satellite constellations, it added.
    The Zhuque-3 has demonstrated the ability to support various commercial missions, including satellite constellation deployment, single satellite launches and rideshare missions, according to LandSpace.
    The company said the rocket has achieved a maximum orbital payload capacity of 14.2 tons in expendable mode, while its reusable configuration is designed to support future constellation deployment needs.  
    The Y2 mission also carried the Honghu-03 satellite developed by Hongqing Technology, combining reusable technology verification with a commercial launch application scenario. LandSpace said the mission verified the full chain of "design, manufacturing, testing, launch and recovery," laying the foundation for future commercial operations.  
    The Zhuque-3 Y2 test comes as China's aerospace industry accelerates efforts to develop reusable launch vehicles.
    According to Chinese experts, multiple companies are now exploring different recovery technologies, including vertical landing and other innovative approaches, reflecting the rapid growth of China's commercial aerospace ecosystem.  
    Reusable liquid launch vehicle, Pallas-1 will begin its mission from Galactic Energy's independently built facility at the Dongfeng Commercial Aerospace Innovation Test Zone in northwestern China, where the company will soon complete testing, propellant filling and launch preparation operations, according to its developer Galactic Energy on Thursday.
    Orienspace's Gravity-2 reusable large liquid launch vehicle is undergoing final ground testing ahead of its maiden flight, which is scheduled in the fourth quarter of 2026. The rocket is designed with a low Earth orbit payload capacity of 21.5 tons.
    Space Pioneer is advancing verification and joint testing of its Yuanxingzhe-1 (YXZ-1) rocket, while i-Space's Hyperbola-3 reusable rocket has completed full-cycle ground verification of offshore recovery and landing technologies and is expected to conduct its maiden flight around the end of 2026.
    Meanwhile, CAS Space's reusable Lihong-2 vehicle is being developed as a platform for verifying key recovery and reuse technologies, as well as conducting microgravity experiments. The vehicle is scheduled to complete its maiden flight and 100-kilometer-class recovery verification test in 2026.
    Pang said reusable rocket technology could help lower launch costs, increase mission frequency and provide stronger support for emerging sectors such as satellite internet, space-based information networks and future large-scale space applications.  
    For China's private space sector, the Zhuque-3 Y2 mission represents a transition from technology verification toward engineering application, according to LandSpace. The company said it aims to further build a "launch-recovery-inspection-reuse" cycle to support future high-frequency and low-cost commercial operations. 
    Experts said reusable rocket technology could help reduce launch costs, increase launch frequency and provide stronger support for emerging sectors such as satellite internet and large-scale space applications.  
    The future challenge for China's reusable rocket developers will be turning successful flight tests into repeatable commercial operations, as the country advances toward a new era of high-frequency space transportation, they noted.
    Photos: Courtesy of Landspace
        Photos: Courtesy of Landspace

    。    中国小康网 独家专稿  文|《小康》·中国小康网 袁凯买卖双方在享受旧物回收与二手交易便利的同时,应该如何保障自己权益?这是新入坑者需要学会的第一课。  “便宜出手机,九成新。”“顺丰包邮,标价直出,成色如图。”各二手交易平台上,展示的商品琳琅满目。随着消费者物质需求的不断升级和变化,旧物品的淘汰速度日益加快。

    二 | 在这样的背景下,“以旧换新”与“二手交易”逐渐成为一种时尚,普及到社会的各个领域。小到个人衣物、五金用品,大到摄影器材、汽车用具,以旧换新正成为年轻人处理旧物的主流选择。  然而,一些问题也逐渐暴露出来。

    三 | 由于门槛过低、管理不到位,各个二手交易平台频频出现买卖假货、钓鱼诈骗、偷换货品、非法销售“赃物”等乱象。

    四 | 买卖双方在享受旧物回收与二手交易便利的同时,应该如何保障自己权益?这是新入坑者需要学会的第一课。图片/米粒  卖家:出售商品也有坑  在许多人眼中,将不再需要的二手物品成功售出,往往意味着交易圆满结束,可以高枕无忧。然而,在复杂的二手交易市场中,卖家同样面临着陷阱与风险。一旦“踩雷”,损失往往以千百计。

    五 | 二手交易市场内,针对卖家的陷阱往往设置在单价较高的商品类目上。

    六 | 这样,别有用心者才有利可图。

    七 | 手机、电脑、相机等产品的出售是卖家“中招”的重灾区。

    八 |   以相机为例,各类数码相机更新换代迅速,单价较高,使得二手交易市场成为其流通的重要场所。

    九 | 然而,这也成为了投机取巧者与不法分子布置陷阱、实施诈骗的主要阵地。在社交平台小红书上,“相机二手交易避坑”话题持续升温,已有上万条讨论内容。许多用户纷纷分享自己在二手相机交易中的遭遇和经验,提醒其他消费者提高警惕,避免上当受骗。  一年前,小刘开始在小红书平台上做“相机二手交易注意事项”系列科普,旨在帮助广大网友在二手相机交易中避免“踩雷”。

    十 | 随着该系列的持续更新,越来越多的网友参与到讨论中,其中不乏因相机交易受骗而寻求解决之道的受害者。  小刘告诉《小康》·中国小康网,自己之所以选择科普相机交易陷阱,是因为自己也曾上过当。

    十一 |   小刘是个摄影迷,前些年里花5万余元购买了专业相机与镜头等配件,后来,因为想要升级换代入手新相机,便将旧机器发布在二手平台出售。信息刚发布不久,他便收到了买家求购咨询的信息,一番交流之后,买家爽快地下了单。

    十二 | 小刘原以为这桩生意就此了结了,没想到卖家收到货后以各种理由压价、“到手刀”。  “对方和我说我机器镜头上有划痕,刀了一千多块,甚至还发来了对应的图片,但我的相机确实是完好无损的。

    十三 | ”小刘后来才知道,“这类‘到手刀’的职业买家,在相机交易圈子里不在少数,如果卖家不同意压价,他们就用激光射CMOS,用尖锐物品划镜头,再把东西退回去,有胆大的直接把东西换成他手里卖不出去的翻新货。”当时,小刘害怕机器退回后受损,只好无奈同意了买家的压价。“东西在别人手上,就由不得自己了。”这是许多类似受害者的共同心理。  据另一位从事相机回收的博主介绍,数码相机回收领域的压价现象是一个由来已久的问题。最开始存在于线下的回收店铺和相机维修店,随着线上平台的兴起,这种现象也蔓延到了网络空间。

    十四 |   线下的回收店铺和相机维修店常常以高价回收为幌子吸引顾客。一旦顾客表达出回收意愿,这些不良商家便会以相机需要质检为由进行拆机。在拆机过程中,他们可能会故意损坏相机,如掰折电池金属片或在相机内部做手脚,导致相机无法正常使用。随后,他们便会以相机存在质量问题为由进行压价,原本商定的回收价格可能会大幅度降低,顾客在面临相机已被拆机且商家花言巧语的情况下,往往只能无奈接受低价出售。“原先,相机至少还在卖家眼前,如果是线上交易的话,干脆整个机子都到对方手里了。这对于卖家来说,风险更大。”该博主表示。

    十五 |   和相机类似,手机、平板、电脑等电子产品的出售几乎面临着相同的困境。  见识过诸多陷阱与骗局后,小刘总结出了几条买卖二手电子产品的注意事项。首先,要特别警惕秒拍秒付的买家。这类买家可能是提前用软件设置好价格,只要监测到货品上架,便直接拍下。这种交易方式往往伴随着较高的风险,因为缺乏充分的沟通和了解,容易出现纠纷。

    十六 | 其次,无论出售还是购买二手电子产品,都需要录制好封箱、开箱视频。这些视频应一镜到底,确保完整记录整个过程。出现纠纷后,这些视频可以作为交易平台审核时的证据,有助于维护自己的权益。  最后,在交易中,价格是一个重要的参考因素。买卖都应以市场价为基准,对于价格异常高昂或低廉的商品要保持警惕。  买家:小心“捡漏”落陷阱  与购买全新的商品相比,二手商品的价格更低,其中也不乏使用痕迹少,甚至全新未拆的物品,因此,物美价廉的二手商品近年来越来越受到消费者的青睐。诚然,在二手市场常常有“心软的神”低价售出优质物品,但在选购二手商品时,也有不少消费者有过“踩坑”的经历,货不对板、退换货困难、卖家隐瞒物品瑕疵等问题时有发生,更为严重的则是落入有心人的骗局中,钱货两失。  文玩是二手交易市场中的常见品类,该类物品价值较高,由于稀有且用途特殊,极小的瑕疵都会影响到商品价值。小张曾花费数千元在二手平台上购买文玩核桃。购买时,卖家称物品“无瑕疵”。但收到核桃后,小张发现其中一只核桃有“断齿”的情况,通过平台与卖家协商“退货退款”无果。

    十七 | “文玩核桃的价格很大程度取决于纹路与手感,‘断齿’即核桃贲张的纹路受到磕碰、损坏。

    十八 | ”小张认为该瑕疵不仅影响了核桃的美观度,更重要的是降低了其市场价值,最终诉至法院。

    十九 |   在维权过程中,小张遇到了一个棘手的问题:他没有保存开箱收货的证据,无法证明“断齿”是在卖家发货前还是收货后产生的。相反,卖家提供了发货前的视频。好在法官通过观察“断齿”处棱角光滑的状态,推断出该瑕疵部分乃是旧伤。

    | 最终小张尽管成功退货退款,也费了一番波折。  对此,业内人士建议,不论买家还是卖家,都应在快递员的见证下,将货品的全部外观、功能性演示等进行详细的视频录制,保存好证据。特别是对买家来讲,风险往往更大,在确认交易前应详细了解商品的性状,主动要求卖家提供尽可能多的照片、视频;收到时尽量保存开箱视频,仔细查验商品细节是否与卖家描述的相符,做好证据保全,以免诉讼时因举证不能而承担败诉的风险。  买到具有瑕疵的货品尚是小事,更为严重的是钱货两失。今年三月,虹口警方成功侦破一起诈骗案,查获涉案金额近48万元,先后共有8名受害者被骗。

    | 李某先在二手平台上以低于市场价20%的价格销售动漫游戏卡牌,吸引买家关注。

    | 他起初以市场价在正规渠道购买卡牌,并转寄给买家,以此完成一桩看似正常的“亏本交易”,从而获取买家的信任。待买家对其产生信任后,李某便以各种理由诱导买家下大单,并要求买家提前确认收货,甚至直接通过银行卡转账进行交易。

    |   对此,警方提醒,消费者在网购交易时,务必谨慎核实卖家的身份和信誉,选择正规渠道进行交易,不要被“低价”诱惑,更不要提前确认收货或者脱离平台交易。  维权:明确法律信息  随着二手交易平台的兴起,越来越多的人选择在网上出售或交换闲置物品。然而,与专业的网络购物平台上的店铺商家不同,大部分二手平台上的卖家并非长期从事此业,他们只是偶尔出售自己的闲置物品。这种非专业的、不定期的交易模式,使得消费者在二手交易中难以受到消费者权益保护法的全面保护。  华东政法大学教授任超指出,消费者权益保护法主要调整的是经营者和消费者之间的关系,其中规定的经营者是指那些长期从事生产、销售商品或提供服务的主体。而许多二手商品卖家并不具备这些特征,他们出售闲置物品的行为具有不定期性,且并非以此为业。因此,从法律定义上来看,这类卖家并不属于消费者权益保护法中的经营者范畴,购买其货物的买家也就难以直接受到该法的保护。  在实际案例中,当消费者发现购买的二手商品存在问题,希望依据消费者权益保护法要求退货或寻求惩罚性赔偿时,卖家往往会以自己并非经营者为由进行抗辩。

    | 这使得消费者的维权之路变得异常艰难。尽管司法实践中,可以通过分析销售者出售商品的性质、来源、数量、价格、频率等因素,来认定其是否从事商业经营活动,但这一认定过程往往需要消费者承担举证责任。  二手商品是否能够“七天无理由退货”同样是买卖双方关注的焦点问题。对于大部分卖家而言,并不想在出售闲置物品时陷入繁琐的发货、收货、退换流程。所以一般都会在商品详情页注明“非质量问题不退不换”。对于买家而言,个人卖家的信誉显然不如企业卖家,如若无法退货,自己则失去了最后一项保障。  对于二手商品的退货问题,律师建议消费者首先应尝试与卖家沟通,如果与卖家沟通无果,可以向交易平台投诉和举报,有的平台会根据买卖双方提供的证据进行“仲裁”,平台查证情况属实后也会对卖家采取相应的处罚措施。否则,则需要先举证证明卖家属于消费者权益保护法所规定的经营者范畴,以此提出“七天无理由退货”的诉求。值得注意的是,消费者权益保护法还规定了包括消费者定做的,鲜活易腐的,在线下载或者消费者拆封的音像制品、计算机软件等数字化商品以及交付的报纸、期刊等四类商品不宜退货。  其实,二手商品交易目前依旧以交易平台介入处理为主。一方面,二手交易往往所涉金额不高,诉讼费时费力;另一方面,法律法规层面暂未有专门针对二手物品的条例,对于二手交易纠纷,大多视作民事合同侵权纠纷进行处理。  对此,平台方应承担起更大的责任,完善各项机制,为买卖双方提供一个安全、可靠的交易环境。应进一步完善准入门槛、售后服务、纠纷解决相关业务,及时清理存在违规行为的用户,维护平台良好生态;同时建立畅通渠道,及时响应维权诉求、处理交易纠纷,为正常交易行为提供保障;在处理纠纷过程中应当站在客观公正的角度,采用更细化的判定标准和分类处理流程。对平台内职业卖家和个人卖家进行身份认证,买卖双方也应加强自身防范意识,提高警惕、擦亮双眼,注重交易全程“留痕”,这样才能精准“避坑”、守好自己的钱袋子。

    |   (《小康》·中国小康网 独家专稿)  本文刊登于《小康》2024年4月下旬刊。

    |

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