HomeSupplier Discoveryarrow-rightElectrical & Electronicsarrow-rightFiber Optic Equipmentarrow-rightOptical Testing Factories & Companies
Filter
Category
More
Management Certification
More
R&D Capacity
Annual Revenue
More
No.of Employees
More
Province & Region
More
about optical testing
  • Technological Innovation
  • Reliable Supply Chains
  • Substantial Manufacturing Capabilities

optical testing3,000+ factories verified

Shenzhen Pioneer Goods Communication Co., Limited

17 yrs·4.8
·Trading Company
Main Products:
Optic fiber cable, Electric cable, Hardware products, Optic fiber test equipment, Fusion Splicer, CATV products, GPON OLT, ONU, Media converter
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shenzhen Pioneergoods Communication Co., Ltd., founded in 2009 and located in Shenzhen, China, is a leading provider of fiber telecom equipment and Fiber to the Home (FTTH) solutions. Operating under the brand name PIOGOODS, the company specializes in the research and development (R&D), production, sales, and technical services of fiber optic communication products. With a strong commitment to quality and innovation, PIOGOODS has established itself as a trusted name in the telecommunications industry, both domestically and internationally.

Shenzhen Core Hecheng Electronic Technology Co., Ltd.

5.0
Main Products:
PCBA Assembly, PCBA, PCB, Quick Turn PCB Assembly, Turnkey PCB Assembly, Cheap PCB Assembly, Prototype PCB Assembly, Volume PCB Assembly, Low Cost PCB
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
PCBFuture is committed to supply high quality and economically One-Stop PCB assembly service to all world customers. Founded in 2009, with over 16 years expertise in electronics manufacturing, we have undergone a series of development and mergers and acquisitions.  We specialize in providing high-quality PCB Fabrication, PCB Assembly, and Component Sourcing services to companies of all sizes worldwide. Our services include prototype assembly, small volume assembly and high volume assembly, box build assembly and other customized services etc. Our goal is to provide high-quality products that meet our customers' requirements in the most cost-effective manner, whether it is a complex multi-layer boards or a double-side surface mount design. PCBFuture has become a leading Electronic Manufacturing Services Provider due to genuine commitment to outstanding customer services and the unparalleled technical expertise of our team. There have more than 6, 000 companies across 75 countries work with us, and we are proudly achieving a remarkable 99% customer satisfaction rate. Since its establishment, PCBFuture has mainly provided turnkey PCB assembly services for customers in Europe, America, Canada, Japan, Korea etc. From quick-turn prototyping, low volume high mix to high volume production, we always keep in mind that top quality, on time delivery, competitive price and impeccable service are the only way to win your loyalty. This allows you, the honored customer, to focus on your core business well assured that your needs are in safe and expert hands.  Why choose us?  PCBFuture continue to absorb advanced technology at local and abroad, and adopted advanced SMT equipment from Japan and Germany, which like high-speed placement machines, automatic press machines as well as 10 temperature re-flow soldering machines. Our PCBA assemblies and dustless workshop is guaranteed by the AOI and X-ray detection. We are fully conformance with the ISO9001: 2015 quality management system, all circuits boards will be under electric testing before loading to SMT assembly lines, and all PCBAs also can be tested if in demand before delivery. Continuous Improvement is our one of company cultures, and should be the one of yours, which pushes the long-term and strong cooperation between us. We are so proudly to drive our customers and us to success through our professional team who with rich experience, sincere & meticulous attitude. Our staff can assist customers in providing integrated solutions from pre-sales to post-sales. Our cost accounting experts also can work with you to create the most cost effective solutions from your prototyping process. Professional, Flexible and Reliable are the heart of how we meet our customer's needs. We firmly believe you will be completely satisfied if work with us. Let's enjoy the work and grow-up together.

Sunny Medical Equipment Limited

Main Products:
Endoscope Camera, B-Ultrasound Scanner, Laboratory Equipment, ECG, Patient Monitor, Dental Equipment, Dialysis Machine, X-ray Machine, Veterinary Equipment
Country/Region:
Guangdong, China
Sample Service:
Sample Available
Company Profile:
Sunny Medical Equipment Limited is a leading exporter and supply chain service provider on medical equipment: Including medical X-ray machine, B- ultrasound scanner, laboratory equipment, ECG, patient monitor, inspection apparatuses, accessories and all others related in medical applications.

Shenzhen Vsndt Co., Ltd.

Main Products:
Industrial Borescope, Videoscope, Borescope, Industrial Videoscope, Video Borescope, Videoscope Camera, Endoscope Camera, Borescope Camera, Industrial Endoscope, Industrial Borescope Camera
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shenzhen VSNDT Co., Ltd is a national high-tech enterprise integrating R&D, production, sales, projects and services. Since its establishment, VSNDT have been focusing on industrial endoscopes and nondestructive internal visual inspection industries(NDT), and has rich experience in internal visual inspection and industrial endo-scope product development.

Shenzhen Huiyan Precision Technology Co., Ltd.

16 yrs
·Trading Company
Main Products:
Fiber laser marking machine and accessories
Country/Region:
Guangdong, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Huiyan Precision Technology Co., Ltd. Was founded in 2010 and is headquartered in Shenzhen, China. The company specializes in the design, R&D, production, and sales of high-precision mechanical components. It provides quality precision component solutions across industries such as consumer electronics, communications, automotive, medical, and industrial equipment.

Xi'an Zealchon Electronic Technology Co., Ltd.

5.0
Main Products:
Testing Machine, Xrf Gold Testing Machine, Bitumen Testing Machine, Asphalt Testing Machine, Soil Lab Testing Machine, Geotechnical Testing Equipment, Civil Engieering Testing Equipment, Driling Fuilds Testing Equipment, Retroreflectometer Road Marking, Static Penetration Test
Country/Region:
Shaanxi, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
With more than 18 years of civil engineering background, Zealchon is engaged in manufacturing and supplying qualitative array of research and laboratory testing equipment. Our range includes research lab Instruments, soil testing instruments, bitumen testing instruments, and Cement & concrete testing equipment.

Dongguan Wirecan Technology Co., Ltd.

Main Products:
Cable Machine, Optical Cable Machine, Stranding Machine, Bunching Machine, Wire and Cable Testing Machine, Optical Cable Testing Machine, Copper Wire Drawing Machine, Twisting Machine, Wire Machine, Extrusion Machine
Country/Region:
Guangdong, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Dongguan Wirecan Technology Co., Ltd, are a professional and high-quality optical cable equipment, wire and cable equipments manufacturer in China, we have 100% quality assurance, excellent engineer and production after service team. Not only we provide machine, but also we provide the technology for how to produce optical cable. To satisfy with foreign market demands and better service for customers, from 2015, We have set up experience pre-sale service and After-sale service team. From 2019, we set up India sale service and technology support office: Sokhi extrusion(deals in: Extruder plants, optical fiber cable machine). During these years, We're working hard to sell our products to all over the country and the world. In the meantime, we have accept customer's consistent favourable comment in quality and delivery.

Nanchang Leadtop Technology Co., Ltd.

3 yrs·5.0
·Trading Company
Main Products:
Vibration isolation; Vibration Isolating; Vibration Damping; Active Vibration Isolation; Vibration Isolation Optical Table; Vibration Control System; Optical Tables; Active Isolators; Optical Breadboa
Country/Region:
Jiangxi, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Nanchang LeadTop Technology Co., Ltd. is a new sales company inheriting the proud traditions as a pioneering technology leader in China's optoelectronics industry since its establishment in 2000, has developed a comprehensive product portfolio encompassing six major series, including active vibration isolation table, electric translation stages, optical benches, optoelectronic instrument application systems, among others. These products have gained wide adoption across a diverse range of domestic and international optoelectronics enterprises, research institutions, and key laboratories within universities. The company's core competencies lie in high-precision active vibration isolation technology products, ultra-large-scale vibration isolation solutions, and stable honeycomb-core optical platforms. Their applications span various sectors such as laser technology, optical and photoelectric detection, semiconductor manufacturing, new materials R&D, aerospace, and biomedicine, significantly contributing to advancements and development in these fields. As a newly established sales entity, LeadTop Technology Co., Ltd. Will uphold the corporate spirit and fine traditions of Liansheng Technology, actively expanding its market presence while providing more professional and efficient services. It aims to drive the growth and development of precision vibration isolation and the optoelectronics industry at large, poised to emerge as a shining new star within the sector in the future.

Dongguan Jaten Instrument Co., Ltd.

22 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Profile Projector, Vision Measuring Machine, Video Measuring Machine, Coordinate Measuring Machine, Glue Dispensing Machine, Optical Comparator, Liquid Dispensing Machine, Hardness Tester, Microscope, Test Chambers
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Dongguan Jaten Instrument Co., Ltd. is a leading company in the field of precision measurement and automation, founded in 2005. Located in Dongguan, Guangdong Province, China, our company specializes in the development and manufacturing of high-quality vision measuring systems, including both manual and fully automated models. These systems are designed to meet the demanding needs of a variety of industries, such as mold manufacturing, injection molding, automotive parts, watch components, stamping parts, and educational and research applications.

Hualong Test Co., Ltd.

Main Products:
Universal Testing Machine, Tensile Testing Machine, Compression Testing Machine, Impact Testing Machine, Fiber Cable Testing Machine, Fatigue Testing Machine, Torsion Testing Machine, Bending Testing Machine, Steel Strand Testing Machine, Material Testing Machine
Country/Region:
Shanghai, China
R&D Capacity:
OEM/ODM Service
Company Profile:
HUALONG Test Instruments Co., Ltd., Established on May 8th, 1993, located in Shanghai, is one of the world's leading manufacturers of Material testing equipment.

Tianjin Tengteng Optoelectronic Technology Co., Ltd.

24 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Optical Lens
Country/Region:
Tianjin, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Tianjin, a significant and international port city, is where the national high-tech company--Tianjin Tengteng Optoelectronic Technology Co., Ltd. Started and developed. It was established in 1995, focused on production, research and sales of precision optics. Over two decades, our company has become one of the leading manufacturers of optical components, crystal components and optical assemblies in China. Our products have been exported to many countries and regions in the world. We have achieved a good reputation and comment with top grade products and considerate service from home and abroad. Tianjin Tengteng Optoelectronic Technology Co., Ltd. Was among the first batch of private enterprises engaged in precision optics in China, and we're No, 1 in Tianjin City. Over 20 years, sticking to our management concept and operation philosophy, with a focus on superlative craftsmanship and technical orientation, we've been committed to processing and manufacturing of medium and small batch, medium and high precision optical components. Our products are mainly exported to Europe and America. We cooperate with many domestic optic corporations and military enterprises. Wide scope of processing and complete product portfolio are our characteristics, and our products cover ultraviolet, visible light and infrared band. The diameter scope of processing is around Φ1 for endoscopic lens~Φ300mm for standard spherical lenses and windows. We're proud of our manufacturing capacity. Of course, competitive prices, good reputation and service are our biggest advantages and also the core competitiveness for us to have a presence in the international market!

Novalion Medical Instrument Co., Ltd.

7 yrs·5.0
Main Products:
Wheelchair,Hospital Bed,Operating Table,Medical Trolley,Commode Chair,Stretcher,Walker
Country/Region:
Jiangsu, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Novalion Medical Instrument Co., Ltd. is one of the leading suppliers of one-stop solution for medical products in China.

Suzhou Engin Medical Technology Co., Ltd.

5.0
Main Products:
Medical Instruments, Ophthalmic Equipment, Surgical Instrumenst, Hair Transplant, Dental Equipments, Digital Upgrate for Microscope, Vitreo Retina Instruments, Microscope, Sliy Lamp, Fue Punch
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Suzhou Engin Medical Technology Co., Ltd was founded in 2003, specializing in the production and export of ophthalmic surgical equipment, ophthalmic surgical instruments, microscope spare parts, set product design, research and development, and production in one. Our company is located in Suzhou City, convenient transportation. Division I all products using international quality standards, products are exported overseas, renowned at home and abroad many markets.

Macylab Instruments Inc.

15 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Spectrophotometer
Country/Region:
Shanghai, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Macy(China) Instruments Inc is part of Shanghai Macylab Instrument Inc, is a high-tech enterprise with independent intellectual property rights. Macy hold the pioneering concept "technology - because you change ", and as a business purpose, and constantly explore, bold innovation. Especially in the field of analytical instruments, Macy constantly develop advanced products that enable Macy to become a high-quality instrument resource supplier and leader.

Biobase Biolin Co., Ltd.

10 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Laboratory Equipment, Medical Device, Biochemistry Analyzer, Autoclave, Biological Safety Cabinet, Laminar Flow Cabinet, Fume Hood, Centrifuge, Oven, Incubator
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
BIOBASE is a professional manufacturer whose business covers laboratory equipment, medical device, engineering project and cosmetics. With more than 3, 000 employees, 25+ factories, BIOBASE has established overseas branches in USA, UAE, Singapore, Kazakhstan, India and other countries. BIOBASE has long-term business partners in 190+ countries. BIOBASE can provide one-stop solutions for laboratory and medical fields. Main products include biological safety cabinet, laminar flow cabinet, fume hood, refrigerator&freezer, autoclave, oven, incubator, centrifuge, wheel chair, hospital, bed, IVD instrument, clean room project, etc. BIOBASE would like to establish win-win business cooperation with distributors all over the world. FAQ: 1. Why choose BIOBASE? We are the leading manufacture in lab furniture and lab equipment, OEM & ODM service are offered. And we have our own overseas technician and installation team. 2. When can I get the price? We usually quote as soon as we get your inquiry. If you need urgent reply, please tell us your email or Skype account, we will contact you ASAP. 3. What can you buy from us? Laboratory Equipment (Biological Safety Cabinet, Fume Hood, Laminar Flow Cabinet, Autoclave, Freezer and Refrigerator)4. Why should you buy from us not from other suppliers? BIOBASE group, founded in 1999 and been through high and stable development for 15 years, who is now with revenues of one hundred million, 1200 employees in China and abroad offices, 22.4 acres land industry parks and 20000 square meters production base. 5. What services can we provide? Please do not worry, manual user will be sent together, you can also contact us with more technological support. 6. How can get the shipping cost? You tell us your destination port or delivery address, we check the Sea Freight, Air Freight or Express Freight for you based on your requirement. 7. How to deal with the faulty? First, our products are produced in strict quality control system, but if any faulty, we'll send new spare parts for free in 1 warranty year. Secondly, our after-sales department will periodically follow up customers. 8. How long is the quotation valid? In general, our prices are valid for one month from the date of quotation. Prices will be adjusted appropriately based on price fluctuations in raw materials and market changes. 9. What kind of guarantee do you offer? We provide 1 year warranty for all our items. 10. Do you accept OEM (Original Equipment Manufacturer) service? Yes we accept any OEM service since we are a professional manufacturer for medical equipment with about more than 10 years of OEM experiences.

Shanghai Trisun Parts Manufacture Co., Ltd.

25 yrs·5.0
·Manufacturer/Factory
Main Products:
Pump Seals, Mechanical Seals, Auto Air Compressor Seals, Auto Cooling Pump Seals, Cartridge Seals, Metal Bellows, Dry Gas Seals, Control Valves
Country/Region:
Shanghai, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shanghai Trisun Parts Manufacture Co., Ltd., established in 1998, is one of the biggest mechanical seal manufacturers in China.

Dongguan Pinyang Wire And Cable Machinery Co., Ltd

4.0
Main Products:
Cable Extrusion Line, Wire Drawing Machine, Wire Bunching Machine & Cable Stranding Machine, Cable Packing Machine, Braiding Machine, Taping Machine, Tining/Enameling Machine
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Pinyang Machinery (Dongguan Pinyang Wire & Cable Machinery Co., Ltd. ), founded in 2013, is a wire and cable machinery manufacturer and turnkey production service provider in China. With the vision of leveraging its competitive advantages to simplify customers' wire and cable production processes, it has become a one-stop solution provider covering production lines for USB cables, CAT5/6/7/8 LAN cables, building wires, power cables, electric vehicle charging cables, robotic flexible drag chain cables, and other cable types.

Xiamen Boshiyuan Machine VISION Technology Co., Ltd.

17 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Aoi Vision Checking Machine, Mold Monitor
Country/Region:
Fujian, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Xiamen Boshiyuan Machine Vision Co., Ltd. is a high-tech enterprise specializing in the research, development, integration, and service of machine vision systems. Our company independently develops and sells Machine mold-protector, One-button Measuring Instrument, CCD algorithm platforms, AOI intelligent AI inspection standard machines, and medical device hair foreign object detection systems. We are committed to providing intelligent inspection system solutions for manufacturing enterprises.

Hangzhou DAYTAI Network Technologies Co., Ltd.

5.0
Main Products:
Optical Receiver, PLC Splitter, Sc Fast Connector, Fiber Optic Distribution Box, ADSS Fiber Optic Cable, Optical Closure, Fiber Optic Cable Clamps, Olt ONU, EDFA, FTTH Drop Cable
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
About us:

SKZ International Co., Ltd.

5.0
Main Products:
Thermal Analysis, Water Quality Analyzer, Textile Testing, Pulp Testing, Rubber and Plastictesting, Density Meter, Electronic Balance, Gas Detector, Moisture Meter, Paper and Paperboard Testing
Country/Region:
Shandong, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
SKZ Industrial Co., Limited and SKZ International Co., Limited are the members of SKZ group, We are specialized in supply Laboratory Instrument, Scientific instrument, Analytical Instrument, Thermal Analysis, Moisture meter, Gas detector and testing instruments for pulps, paper, cardboards, plastic, rubber and textile.

Hangzhou Civit Instrument Equipment Co., Ltd.

5.0
Main Products:
Soil Aggregate Rock Testing Equipment, Cement Mortar Testing Equipment, Concrete Testing Equipment, Asphalt Testing Equipment, Scientific Lab Equipment, Survey Instrument
Country/Region:
Zhejiang, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Hangzhou Civit Instrument Equipment Co., Ltd. is professional manufacturer supplier of Testing equipments in construction industry and scientific lab, we specialized in dealing Soil Rock Aggregate testing equipment, Cement Concrete testing equipment, Asphalt testing equipment, also supply Steel testing equipment, Survey instrument, Scientific lab equipment, General labware etc.

SHINHO OPTICS LIMITED

5.0
·Manufacturer/Factory & Trading Company
Main Products:
Fusion Splicer, Fiber Splicing Machine, OTDR, Fiber Optic Power Meter, Vfl, Fiber Fusion Splicer, Fiber Optic Fusion Splicers, Laser Source, Fiber Cleaver, Fiber Test Equipment
Country/Region:
Shanghai, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shinho Optics Limited was founded in 2012, it has dozens of national patents. The core Research and Development team has more than 20 years' experience in the field. Now Shanghai is the operation headquarters, and a new modern factory of 20, 000 square meters was built in Bengbu High-tech Zone, Anhui Province. The factory has been certified by ISO systems, the products are certified with CE, UKCA, RoHS, IP52 etc. <br/><br/>Shinho supplies various products for fiber optical projects, such as FTTX fiber fusion splicer, trunk line fiber fusion splicer, ribbon fiber fusion splicer, fiber thermal stripper, OTDR, optical power meter, PON Power Meter, XG PON power meter, light source, fiber identifier, fiber tools kit etc. Our instruments and project solutions are well recognized by many telecom operators, ISP, and telecom solution providers. <br/><br/><br/><br/><br/>Shinho is also the professional manufacturer of specialty fiber processing equipments, including PM fiber fusion splicer, multi-core fiber fusion splicer, large diameter fiber fusion splicer, large diameter fiber cleaver etc., the performance has reached international level. <br/><br/>Shinho's products and services cover the fields of fiber optic engineering, metropolitan area network home network, CATV, fiber network repairing and maintaining, optical device production, fiber laser production, scientific research, university teaching etc. The products are exported to more than 90 countries in Europe, North America, Africa, the Middle East, Southeast Asia and so on. A wholly-owned subsidiary SHINHO America Inc. was established in New Jersey, USA in 2022, shinho became the first Chinese fiber fusion splicer manufacturer with branch in the United States.

XINDRAY MEDICAL INTERNATIONAL CO., LIMITED

5.0
Main Products:
Medical Equipment, X-ray Machine, Hospital Equipment, Surgical Medical Product, Operation Light, Operation Table, Hospital Bed, Medical Instrument, Medical Disposable Product, Extracorporeal Shock Wave Lithotripter
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
XINDRAY MEDICAL INTERNATIONAL Co., Ltd, as professional medical products supplier, specialized in various kinds of medical products: Medical Equipment, Dental Equipment, Medical Disposable Products, Pharmaceuticals products.

Shenzhen Neofibo Technology Limited

18 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Fiber Polishing Machine, Fiber Polishing Fixture, Fiber Patchcord Production Equipment, Polarization Maintaining Fiber Alignment System, Fiber Testing Equipment, Fiber Connector & Adapter
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Shenzhen Neofibo Technology Limited was founded in 2008, and is located in Shenzhen, China. Neofibo's aim is to make our customers' optical fiber connectivity more reliable. We are a professional supplier for optical fiber products, aiming at making customers' optical fiber connectivity more reliable. We can not only provide various optical fiber polishing machines, but also design and manufacture optical fiber polishing fixtures with different structures.

Shanghai Qi Pang Industrial Co., Ltd.

13 yrs·5.0
Main Products:
Cable Take up and Pay off Machine, Straightening and Cutting Machine, Laser Diameter Gauge
Country/Region:
Jiangsu, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Shanghai Qi Pang Industrial Co., Ltd. Have more than 20 years of production experience and has been focus on wire cable take-up&pay-off machines wire straightener machine, , Extruder auxiliary equipment (such as laser diameter gauge. Spark machines, meter counters, etc. ) and related cable manufacturing equipment ever since its establish.

Nanjing Tianxingtong Electronic Technology Co., Ltd.

16 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Fusion Splicer, Fiber Cleaver, OTDR, Fiber Splicing Machine
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Nanjing Tianxingtong Electronic Technology Co., Ltd is located in Nanjing which is ancient captical of six dynasties.