可充电脱落细胞提取仪——内置锂电池负压吸附·接触性DNA无损富集·便携防污染一体化现场生物物证采集系统（刑事技术现场勘查/法医DNA检验/反恐应急取证核心装备）

 

可充电脱落细胞提取仪——内置锂电池负压吸附·接触性DNA无损富集·便携防污染一体化现场生物物证采集系统（刑事技术现场勘查/法医DNA检验/反恐应急取证核心装备）

〖重要合规前置声明〗 本产品为刑事技术生物物证采集专用装备，仅面向具备法定鉴定资质与刑事技术检验许可的各级公安机关刑事技术部门、人民检察院技术部门、司法鉴定机构及授权刑事技术实验室定向供应，严禁向任何个人、无资质企业及非授权单位销售或提供。本设备的购置、使用与管理，必须严格遵守《中华人民共和国刑事诉讼法》《司法鉴定程序通则》《公安机关刑事案件现场勘验检查规则》及国家关于生物物证管理、实验室生物安全的相关法律法规与行业技术标准，必须由经过专业培训、取得相应刑事技术或法医物证检验岗位资质的人员规范操作，严禁无资质单位和个人违规获取、使用本设备，严禁因违规操作导致检材污染、DNA降解或证据链断裂，严禁将本设备用于法定物证提取之外的任何用途。

产品概述

可充电脱落细胞提取仪——内置锂电池负压吸附·接触性DNA无损富集·便携防污染一体化现场生物物证采集系统（亦称可充电脱落细胞提取仪、便携式脱落细胞吸附仪）是一款专为犯罪现场及户外应急环境设计的便携式生物物证采集装备，属于公安刑事技术现场勘查、法医DNA检验及反恐应急取证领域的核心生物检材提取设备。该产品通过负压吸附原理，专为对遗留在衣物、刀具、绳索、手套、门把手、方向盘、手机及各类粗糙或不规则客体表面的人体脱落细胞（如皮肤上皮细胞）进行无损提取与高效富集深度定制，完美适配入室盗窃案中嫌疑人可能触摸部位的系统性接触DNA提取、命案及伤害案件中凶器及衣物的生物物证快速固定、野外抛尸现场无电源条件下的关键检材采集及反恐安检中敏感物品的非破坏性生物样本获取等多种专业执法场景。该仪器的突出特点是内置可充电锂电池独立供电，无需依赖外部电源即可正常工作，将传统局限于实验室内的大型台式脱落细胞提取设备的生物检材采集能力延伸至任何案发现场，从根本上解决了野外勘查、车辆搜查、室内断电现场等无稳定电源环境下无法进行规范化生物物证提取的实战痛点，能够为一线勘查人员与法医物证鉴定人提供“现场独立供电、负压无损富集、全套防污染耗材集成、开箱即用”的便携式接触性DNA证据采集能力，是提升犯罪现场生物物证发现率与DNA检验成功率的关键基础装备。

技术原理

该设备基于负压真空吸附与滤膜截留富集原理工作。其内置的微型真空泵在通电后产生持续稳定的负压气流，真空度≥1.8 kPa。操作者通过连接于主机吸气口的无菌橡胶管将吸力传递至一次性无菌滤纸或专用提取头。当提取头或滤纸在客体表面缓慢移动时，高速气流在吸附口附近形成局部负压区，使松散附着于客体表面的脱落上皮细胞、细胞团块及微量生物组织碎屑被气流带动，随吸入空气一同进入采样管路，最终被截留并富集于专用滤膜或无菌滤纸表面。整个提取过程对客体本身无任何物理损伤——无需刮擦、擦拭或湿润处理，仅凭气流作用即可完成细胞采集，完整体现了“无损优先”的物证检验原则，对珍贵检材或需保护表面完好的物品（如文物、精密电子设备）同样适用。

在电源与便携设计层面，设备内置可充电锂电池，整机功率36W，工作噪音≤76 dBA，在保证足够提取真空度的同时维持低噪音运行，适应室内勘查及需隐蔽取证的场景需求。仪器全部组件——包括提取主机、充电器、一次性无菌滤纸、橡胶管、多种规格离心管、塑料物证袋、PE手套、竹制防静电镊子及不锈钢镊子——均集成于一个专用铝合金运输箱内，开箱即用，携行便捷，抵达现场后可迅速展开作业，满足刑事技术勘查对现场物证提取时效性的严苛要求。

核心功能与合规实战价值

内置锂电池现场独立供电，实现从实验室到任何案发现场的生物物证规范化提取全覆盖
设备内置可充电锂电池，整机36W功率设计，无需外接市电或车载电源即可正常开展提取作业。该独立供电特性使脱落细胞提取能力突破了传统大型台式设备必须固定于实验室工位的空间限制，可在野外抛尸现场、高速公路事故路段、偏远山区搜查点、室内断电场所等任何无稳定电源的环境中完成符合规范的生物检材采集。勘查人员无需携带笨重的移动电源或发电机，单兵携行铝合金箱即可独立完成从提取到包装的全流程作业，将生物物证的固定窗口从“需将检材运回实验室”压缩至“现场即时提取”，有效避免了因检材运输延误导致的细胞降解或污染风险，完全契合《公安机关刑事案件现场勘验检查规则》对物证须“迅速、全面、细致”提取的程序要求。

负压无损吸附与全套防污染耗材闭环，从操作流程层面保障接触性DNA证据的纯净性与法律效力
设备采用规范的负压真空吸附方式，将脱落的微量细胞有效富集于一次性无菌滤纸表面。整套标准配置包含无菌滤纸、50ml及20ml离心管、塑料物证袋、PE手套、竹制防静电镊子及不锈钢镊子，形成从采集—转移—封装—暂存的完整无污染作业链条。竹制防静电镊子的使用避免了金属镊子可能对细胞造成的静电吸附损失，PE手套则防止了操作者自身脱落细胞对检材的交叉污染。该标准化耗材配置与规范化操作流程使每一次接触性DNA的提取均可在法庭上经得起关于“检材是否可能被污染”的程序性质疑，为后续DNA检验分型结果的证据效力提供了从采集端即合规的技术保障，完全满足《司法鉴定程序通则》关于物证提取须确保检材纯净性与可追溯性的法定要求。

便携集成化设计，支撑多场景快速响应与重点目标精准提取的实战节奏
设备将提取主机、充电器、全套耗材及辅助工具全部集成于一个专用铝合金运输箱内，防护性能优异，便于警用车辆长期随车配备与日常转运。抵达现场后开箱即用，数分钟内即可开始对凶器、嫌疑衣物、门窗把手、绳索等各类客体进行针对性的接触性DNA提取。该集成化便携设计特别适配需要快速初筛与重点取证的场景——如入室盗窃案中对嫌疑人撬窗入口处进行系统性擦拭提取，或命案现场对尸体周边可疑物品的快速检材固定——勘查人员无需在不同耗材包之间翻找，即可在同一作业平台上完成从提取到封装的全流程操作，显著提升了现场生物物证的采集效率与规范化水平。

合规应用场景

犯罪现场接触性DNA的系统性提取与快速固定场景
在入室盗窃、抢劫、命案等刑事案件的现场勘查中，勘查人员使用本设备对嫌疑人可能接触过的各类客体表面进行逐件提取——包括门窗把手、抽屉拉手、保险柜面板、刀具手柄、绳索、胶带、饮料容器及手机表面等。负压吸附方式对客体无损伤，可对贵重物品或需保留原貌的物证进行安全提取。提取物经规范封装后送交法医DNA实验室进行STR分型检验，为锁定嫌疑人身份及认定犯罪事实提供关键生物证据。提取操作与封装流程完全符合《公安机关刑事案件现场勘验检查规则》关于生物物证提取与保存的规范标准。

反恐安检与大型活动安保中敏感物品的非破坏性生物样本采集场景
在反恐安检、重要会议及大型活动安保中，安检人员对无法拆解或不便移动的敏感可疑物品（如电子设备、密闭容器、精密仪器）需进行非破坏性生物痕迹筛查。使用本设备以负压吸附方式在物品表面进行无损细胞采集，提取样本可用于后续DNA分析以判断物品接触者身份，为安检执法提供生物证据支持。

户外及偏远地区无电源现场的关键生物证据应急提取场景
在野外抛尸现场、偏远山区案发地等完全无市电的环境中，勘查人员利用本设备的内置锂电池供电系统，独立完成尸体衣物、覆盖物及周边可疑物品表面的脱落细胞提取作业。无需依赖车载电源或发电机，即可在自然条件恶劣、时间窗口紧张的情况下完成关键生物物证的现场固定，为后续实验室检验保留高质量的第一手检材。

核心技术参数

工作电源方面，设备内置可充电锂电池，实现现场独立供电，无需外接电源。整机功率36W。吸附性能方面，真空度≥1.8 kPa，通过负压吸附方式将脱落细胞有效富集于一次性无菌滤纸表面。工作噪音≤76 dBA，在保证提取效能的同时维持低噪音运行。便携集成方面，提取主机、充电器、全套耗材及工具均集成于一个专用铝合金运输箱内，开箱即用，携行便捷。标准配置包含可充电式提取仪主机一台、专用充电器一个、一次性无菌滤纸一盒、提取用橡胶管一盒、50ml离心管四支、20ml离心管五支、塑料物证袋二十个、PE手套一百只、竹制防静电镊子一把、不锈钢镊子一把及便携铝合金运输箱一个。使用提示方面，本设备侧重现场便携与应急响应，设计定位为对重点部位进行快速、有针对性的提取，或在无法获取电源的现场完成关键证据的固定，对于需要长时间、大面积筛查的场景，建议规划好电池续航或配备备用电源方案。

合规实战应用案例

某市发生一起入室盗窃案，嫌疑人通过撬窗进入室内，在窗框边缘及卧室保险柜门板上留有疑似手指接触痕迹。因案发后现场已停电，且需在短时间内完成勘查以恢复住户正常生活，刑侦技术人员使用本可充电脱落细胞提取仪对窗框铝合金边缘、保险柜面板按键区及柜门把手处进行了逐点吸附提取。技术人员在数分钟内完成了上述多个重点部位的细胞富集操作，将吸附有无色细胞团块的一次性无菌滤纸放入离心管内密封，标注采样部位后存入物证袋。检材送交DNA实验室后成功提取出嫌疑人完整DNA分型，经与数据库比对，锁定一名有盗窃前科的嫌疑人并最终破案。本案中提取仪的内置供电与便携一体化设计，使勘查人员在断电现场仍能按规范完成生物物证提取，为案件突破争取了宝贵时间。

某市公安机关在侦办一起故意伤害致人死亡案件时，需对嫌疑人遗留在现场的作案刀具进行接触性DNA提取。因刀具表面沾有血迹及组织残渣，部分区域可能附着嫌疑人的脱落上皮细胞，勘查人员使用本提取仪以负压吸附方式在刀柄与刀格交界处等不易擦拭提取的细缝区域进行无损细胞采集，成功富集到接触性DNA检材。提取后刀具原貌完整保留，不影响后续工具痕迹检验及血迹形态分析。经实验室DNA分型，提取物中检出了与嫌疑人一致的混合基因型，为认定嫌疑人使用该刀具实施伤害行为提供了关键生物证据支撑。提取过程的无损操作与规范封装在法庭质证中获得了合议庭的认可。

厂家信息：北京毕思特联合科技有限公司
网址：https://www.bestlh.com
地址：北京市亦庄开发区经海六路一号院尖子班 C9 独栋
电话：010-56526048

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Rechargeable Exfoliated Cell Extractor — Built-in Lithium Battery Vacuum Adsorption · Non-Destructive Touch DNA Enrichment · Portable Contamination-Proof Integrated On-Site Biological Evidence Collection System (Criminal Technical Scene Investigation / Forensic DNA Testing / Counter-Terrorism Emergency Evidence Collection Core Equipment)

Global site URL：https://xilankeji.en.alibaba.com

〖Important Compliance Precaution〗 This product is a specialized equipment for criminal technical biological evidence collection, which is solely supplied to authorized entities such as criminal technical departments of public security organs, technical departments of people's procuratorates, forensic identification institutions, and authorized criminal technical laboratories with statutory identification qualifications and criminal technical examination permits. Any sale or supply to individuals, non-qualified enterprises and unauthorized units is strictly prohibited. The procurement, use and management of this equipment must strictly comply with the Criminal Procedure Law of the People's Republic of China, the General Rules for Judicial Authentication Procedures, the Rules for On-Site Criminal Case Scene Investigation and Examination by Public Security Organs, and national laws, regulations and industrial technical standards regarding biological evidence management and laboratory biosafety. Operation must be carried out exclusively by professionally trained personnel holding corresponding criminal technical or forensic biological evidence examination post qualifications. Unauthorized units and individuals are strictly forbidden from acquiring or using this equipment. Any contamination of evidence, degradation of DNA, or breakage in the chain of custody caused by improper operation, as well as any use of this equipment for purposes other than statutory physical evidence collection, is strictly prohibited.

Product Overview

The Rechargeable Exfoliated Cell Extractor — Built-in Lithium Battery Vacuum Adsorption, Non-Destructive Touch DNA Enrichment, Portable Contamination-Proof Integrated On-Site Biological Evidence Collection System (also referred to as the Rechargeable Exfoliated Cell Extractor or Portable Exfoliated Cell Aspirator) is a portable biological evidence collection device specifically designed for crime scenes and outdoor emergency environments. It constitutes a core biological specimen extraction equipment in the fields of criminal technical on-site investigation, forensic DNA testing, and counter-terrorism emergency evidence collection. This device operates on the principle of negative-pressure adsorption and is deeply customized for the non-destructive extraction and efficient enrichment of human exfoliated cells (such as skin epithelial cells) left on clothing, knives, ropes, gloves, door handles, steering wheels, mobile phones, and various rough or irregular object surfaces. It perfectly adapts to various professional law enforcement scenarios, including the systematic touch DNA extraction from areas a suspect may have touched in burglary cases, the rapid preservation of biological evidence on weapons and clothing in homicide and assault cases, the collection of key specimens at remote field body disposal sites without a power supply, and the non-destructive acquisition of biological samples from sensitive items during counter-terrorism security inspections. A standout feature of this instrument is its built-in rechargeable lithium battery for independent power supply, requiring no external power source for normal operation. This extends the biological evidence collection capability—traditionally confined to large desktop extraction equipment in the laboratory—to any crime scene. It fundamentally resolves the operational pain point of being unable to perform standardized biological evidence extraction in environments lacking a stable power supply, such as field investigations, vehicle searches, and indoor scenes with power outages. It provides frontline investigators and forensic evidence examiners with "on-site independent power supply, non-destructive negative-pressure enrichment, a full set of contamination-proof consumables integration, and ready-to-use out-of-the-box" portable touch DNA evidence collection capability. It is a key foundational piece of equipment for enhancing the discovery rate of biological evidence at crime scenes and the success rate of DNA testing.

Technical Principle

This device operates on the principles of negative-pressure vacuum suction and filter membrane interception and enrichment. Its built-in micro vacuum pump generates a continuous and stable negative-pressure airflow once powered on, with a vacuum degree of ≥1.8 kPa. The operator transmits the suction force to a disposable sterile filter paper or a dedicated extraction head through a sterile rubber tube connected to the main unit's suction port. As the extraction head or filter paper slowly moves across the object's surface, the high-speed airflow creates a localized negative-pressure zone near the suction port. This airflow entrains the loosely adhered exfoliated epithelial cells, cell clusters, and trace biological tissue debris from the surface, drawing them into the sampling line along with the inhaled air. They are ultimately intercepted and concentrated on the surface of the dedicated filter membrane or sterile filter paper. The entire extraction process causes no physical damage to the object itself—cell collection is achieved solely through airflow action, without the need for scraping, swabbing, or wetting treatments. This fully embodies the principle of "non-destructive priority" in physical evidence examination, making it equally suitable for valuable specimens or items requiring surface integrity preservation (such as artifacts or precision electronic equipment).

At the power supply and portability design level, the device features a built-in rechargeable lithium battery, with a total unit power consumption of 36W and an operating noise level of ≤76 dBA. This ensures sufficient extraction vacuum while maintaining low-noise operation, suitable for indoor investigations and scenarios requiring discreet evidence collection. All components of the instrument—including the extraction main unit, charger, disposable sterile filter papers, rubber tubes, multiple sizes of centrifuge tubes, plastic evidence bags, PE gloves, anti-static bamboo tweezers, and stainless steel tweezers—are integrated into a dedicated aluminum alloy transport case. It is ready to use straight out of the case, convenient to carry, and can be rapidly deployed upon arrival at the scene, meeting the stringent timeliness requirements for on-site evidence extraction in criminal technical investigations.

Core Functions and Compliance Operational Value

Built-in Lithium Battery for On-Site Independent Power Supply, Enabling Full Coverage of Standardized Biological Evidence Extraction from the Laboratory to Any Crime Scene
The device features a built-in rechargeable lithium battery with a total 36W power design, capable of normal extraction operations without requiring an external AC or vehicle power supply. This independent power supply characteristic breaks through the spatial limitation of traditional large desktop equipment, which must be fixed at a laboratory workstation. It allows for compliant biological evidence collection in any environment lacking a stable power supply, such as field body disposal sites, highway accident stretches, remote mountain search points, and indoor locations with power outages. Investigators do not need to carry bulky portable power stations or generators; a single person carrying the aluminum alloy case can independently complete the entire workflow from extraction to packaging. This compresses the biological evidence preservation window from "need to transport the specimen back to the laboratory" to "instant on-site extraction," effectively preventing the risk of cell degradation or contamination caused by delays in specimen transport. This fully complies with the procedural requirement for the "rapid, comprehensive, and meticulous" collection of physical evidence as stipulated in the Rules for On-Site Criminal Case Scene Investigation and Examination by Public Security Organs.

Non-Destructive Negative-Pressure Suction and a Complete Closed-Loop of Contamination-Proof Consumables, Safeguarding the Purity and Legal Validity of Touch DNA Evidence from the Operational Procedure Level
The device employs a standardized negative-pressure vacuum suction method to effectively concentrate the exfoliated trace cells onto the surface of a disposable sterile filter paper. The entire standard configuration includes sterile filter papers, 50ml and 20ml centrifuge tubes, plastic evidence bags, PE gloves, anti-static bamboo tweezers, and stainless steel tweezers, forming a complete, contamination-free operational chain of collection—transfer—packaging—temporary storage. The use of anti-static bamboo tweezers prevents the electrostatic adsorption loss of cells that metal tweezers might cause, while PE gloves prevent cross-contamination of the evidence with the operator's own exfoliated cells. This standardized consumables configuration and standardized operational procedure ensures that every instance of touch DNA extraction can withstand procedural challenges in court regarding "whether the specimen could have been contaminated." It provides a technical guarantee, compliant from the collection end, for the evidentiary validity of the subsequent DNA typing results, fully satisfying the statutory requirement of the General Rules for Judicial Authentication Procedures that the extraction of physical evidence must ensure the purity and traceability of the specimen.

Portable Integrated Design, Supporting the Operational Tempo of Rapid Multi-Scenario Response and Targeted Extraction of Key Evidence
The device integrates the extraction main unit, charger, a full set of consumables, and auxiliary tools into a single dedicated aluminum alloy transport case with excellent protective performance. This makes it convenient for long-term on-board stowage in police vehicles and routine transport. Upon arrival at a scene, it is ready to use straight out of the case, allowing for targeted touch DNA extraction from various objects such as weapons, suspect clothing, door and window handles, and ropes to begin within minutes. This integrated portable design is particularly suited for scenarios requiring rapid preliminary screening and targeted evidence collection—such as systematically swabbing the prying entry point used by a suspect in a burglary, or the rapid preservation of biological evidence from suspicious items around a body at a homicide scene. Investigators do not need to rummage through different consumable kits; all operations from extraction to packaging can be completed on the same work platform, significantly enhancing the collection efficiency and standardization level of on-site biological evidence.

Compliant Application Scenarios

Systematic Extraction and Rapid Preservation of Touch DNA at Crime Scenes
During the on-site investigation of criminal cases such as burglary, robbery, and homicide, investigators use this device to perform item-by-item extraction from the surfaces of various objects a suspect may have touched—including door and window handles, drawer pulls, safe panels, knife handles, ropes, adhesive tape, beverage containers, and mobile phone surfaces. The negative-pressure suction method is non-destructive to the objects, allowing for the safe extraction of evidence from valuable items or those requiring the preservation of their original appearance. After standardized packaging, the extracts are sent to a forensic DNA laboratory for STR typing analysis, providing key biological evidence for identifying the suspect and establishing the facts of the crime. The extraction operation and packaging procedure fully comply with the standardized standards for the collection and preservation of biological evidence stipulated in the Rules for On-Site Criminal Case Scene Investigation and Examination by Public Security Organs.

Non-Destructive Biological Sample Collection Scenario for Sensitive Items in Counter-Terrorism Security Inspections and Major Event Security
During counter-terrorism security inspections, important conferences, and major event security operations, security personnel need to conduct non-destructive biological trace screening on sensitive or suspicious items that cannot be disassembled or are inconvenient to move (such as electronic devices, sealed containers, precision instruments). This device is used to collect cells non-destructively from the item's surface via negative-pressure suction. The extracted samples can be used for subsequent DNA analysis to determine the identity of the item's handler, providing biological evidence support for security enforcement.

Emergency Extraction Scenario for Critical Biological Evidence at Outdoor and Remote Off-Grid Scenes
At field body disposal sites, remote mountainous crime scenes, and other environments completely without mains electricity, investigators utilize the device's built-in lithium battery power system to independently carry out exfoliated cell extraction from the deceased's clothing, coverings, and surfaces of surrounding suspicious items. Without relying on vehicle power or generators, the preservation of key biological evidence can be completed on-site under harsh natural conditions and within a tight time window, retaining high-quality, first-hand specimens for subsequent laboratory testing.

Core Technical Parameters

In terms of power supply, the device features a built-in rechargeable lithium battery, enabling on-site independent power supply without an external power source. The total unit power consumption is 36W. For adsorption performance, the vacuum degree is ≥1.8 kPa, effectively concentrating exfoliated cells onto the surface of disposable sterile filter paper through negative-pressure suction. The operating noise is ≤76 dBA, maintaining low-noise operation while ensuring extraction efficiency. For portable integration, the extraction main unit, charger, a full set of consumables, and tools are all integrated into a dedicated aluminum alloy transport case, ready to use out of the box and convenient to carry. The standard configuration includes one rechargeable extractor main unit, one dedicated charger, one box of disposable sterile filter papers, one box of extraction rubber tubes, four 50ml centrifuge tubes, five 20ml centrifuge tubes, twenty plastic evidence bags, one hundred PE gloves, one pair of anti-static bamboo tweezers, one pair of stainless steel tweezers, and one portable aluminum alloy transport case. As a usage note, this device is oriented towards on-site portability and emergency response. Its design is positioned for performing rapid, targeted extraction from key areas, or for preserving critical evidence at scenes where power is unavailable. For scenarios requiring prolonged, large-area screening, it is recommended to plan for battery endurance or have a backup power solution ready.

Compliant Field Application Cases

A burglary occurred in a city. The suspect had gained entry by prying open a window, leaving suspected fingerprint contact marks on the edge of the window frame and the door panel of the bedroom safe. Because the power was out at the scene after the crime, and the investigation needed to be completed quickly to restore normalcy for the residents, criminal technical personnel used this Rechargeable Exfoliated Cell Extractor to perform point-by-point suction extraction on the aluminum alloy edge of the window frame, the keypad area of the safe panel, and the safe door handle. The technicians completed the cell enrichment operation on these multiple key areas within minutes, placing the sterile filter papers with the adsorbed, colorless cell clusters into centrifuge tubes for sealing. They were then labeled with the sampling location and stored in evidence bags. After the specimens were submitted to the DNA laboratory, a complete DNA profile of the suspect was successfully extracted. Comparison with the database identified a suspect with a prior record of theft, ultimately leading to the resolution of the case. In this instance, the built-in power supply and portable integrated design of the extractor allowed investigators to complete the biological evidence extraction according to standards even at a scene without power, buying valuable time for the breakthrough in the case.

While investigating a case of intentional injury resulting in death, a municipal public security organ needed to perform touch DNA extraction on the weapon—a knife—left at the scene by the suspect. Because the surface of the knife was stained with blood and tissue residue, and some areas might bear the suspect's exfoliated epithelial cells, investigators used this extractor's negative-pressure suction method to perform non-destructive cell collection from crevices, such as the junction between the blade and the guard, which are difficult to access by swabbing. Touch DNA specimens were successfully enriched. After extraction, the original appearance of the knife remained intact, not affecting subsequent tool mark examination or bloodstain pattern analysis. Following laboratory DNA typing, a mixed genotype consistent with the suspect was detected in the extract, providing key biological evidence support for determining that the suspect used the knife to commit the assault. The non-destructive operation and standardized packaging of the extraction process were acknowledged by the collegial panel during court cross-examination.

Manufacturer Information: Beijing Best United Technology Co., Ltd.
Website: https://www.bestlh.com
Address: Building C9, Jianziban, No.1 Courtyard, Jinghai Sixth Road, Yizhuang Development Zone, Beijing
Tel: 010-56526048