Nucleic acid detection principle of a new coronavirus All organisms contain nucleic acids other than prions. Nucleic acids include deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The new coronavirus is a virus that contains only RNA. Specific RNA sequences in the virus distinguish the virus from other pathogens Landmarks. After the emergence of the new coronavirus, Chinese scientists completed the analysis of the whole genome sequence of the new coronavirus in a very short time, and compared the genome sequences of other species with the specific nucleic acid sequences in the new coronavirus. During clinical laboratory testing, if the specific nucleic acid sequence of a novel coronavirus can be detected in a patient sample, it should be indicated that the patient may be infected with the novel coronavirus. The most common method for detecting novel coronavirus-specific sequences is real-time PCR (polymerase chain reaction). Because the PCR reaction template is only DNA, the new coronavirus nucleic acid (RNA) should be reverse transcribed into DNA before the PCR reaction. In the PCR reaction system, a pair of specific primers and a Taqman probe are included. The probe is a specific oligonucleotide sequence, and both ends are labeled with a reporter fluorescent group and a quenching fluorescent group. When the probe is complete, the fluorescent signal emitted by the reporter group is absorbed by the quenching group; if a target sequence exists in the reaction system, the probe is bound to the template during the PCR reaction, and the DNA polymerase uses the enzyme's exonuclease activity along the template to Enzymatic digestion degrades, the reporter group is separated from the quenching group, and emits fluorescence. For each DNA strand amplified, a fluorescent molecule is produced. The quantitative PCR instrument can monitor that the number of cycles (Ct value) at which the fluorescence reaches a preset threshold is related to the viral nucleic acid concentration. The higher the viral nucleic acid concentration, the smaller the Ct value. The products of different manufacturers will determine the positive judgment value of this product according to the performance of their own products. In recent years, Hecho company has supplied high performance Fiber Optic Cable and Fiber Optic Bundles to more and more nucleic acid detection manufacturers. The customized optical fiber completely meets the requirements of customers and has won unanimous praise from the market.

Dear customer, Thank you for your always support and pleasant cooperation in our work in the past year. In order to better serve your company, we hereby inform you of our company's holiday time for the New Year and Spring Festival in 2020, so as to make good preparations for the holidays. Thanks for your support! Holiday arrangement: New Year: Jan. 1st, 2020. Spring Festival: Jan. 20, 2020 Until to Feb. 2, 2020. If there's any questions on Fiber Optic Illuminator or Light Guides and Fiber Optic Cables, pls feel free to contact us. Best Wishes. Nanjing Hecho Technology Co., Ltd 2019-12-24

Nanjing Hecho Technology Co., Ltd. is a leading provider of fiber optic transmission solutions in China. By providing innovative technology and product solutions to customers in multiple countries around the world, companies and customers can enjoy the value of innovation. Products including Fiber Optic Bundles, Fiber Optic Illuminators, Fiber Optic Sensors, Machine Vision Lighting and so on, flexible to meet the diverse needs of customers in different industries, such as industry, medical, lighting, optics, and the pursuit of rapid innovation. The CIOE exhibition will be held from September 4th to 7th, 2019. Our booth number is 6D35, 6D36. Welcome every customers to visit our booth!

The Near-infrared optical brain imaging system is an optical imaging system for capturing brain behavioral functions. It uses safe near-infrared light to measure oxyhemoglobin and deoxyhemoglobin in the cerebral cortex. Functional near-infrared spectroscopy (fNIRS) is a non-invasive means of detecting cerebral cortical function. It detects the change of the absorbed light signal, which corresponds to the area where the brain complement is excited. The change in the optical signal (time range greater than 100 ms) is due to changes in the oxygen and deoxygenated hemoglobin concentrations at this location. Time-dependent optical signals (EROS) are detected by detecting the scattering of the subsequent excitation of the diffuse signal. This change (time range less than 100 ms) is caused by changes in the shape of the glial and neuronal or diaphragm optical properties. Generally, laser diodes are used to emit 690 nm and 830 nm wavelengths, which are transmitted to the human head through optical fiber paths. Once the light path enters the tissue, the near-infrared light is absorbed very weakly, but it will be greatly scattered by the heterogeneity of the tissue. A small portion of the light will be reflected off the tissue and sent to the detector through the fiber collection detector for data analysis. Near-infrared fiber optical is fixed by a designed headgear for different situations such as adults and children. For adult applications, up to 128 transmit fibers and up to 64 receive fiber optic detector bundles can be placed on the adult head. In addition to its application in drug development and medical research, functional near-infrared light brain imaging systems can be applied to many subject areas, including basic research, information science research, and educational psychology research. Nanjing Hecho Technology Co., Ltd. has more than ten years of experience in the production of near-infrared brain imaging fiber cables. It uses imported glass fiber with high transmission rate from Schott SCHOTT. The fiber bundle has high transmittance, long service time and high bending. With the advantages of high flexibility and light weight, it provides 90-degree elbow L-shaped fiber and straight-through fiber bundle of various specifications and lengths. It has been provided to many functional brain imaging fNIRS equipment manufacturers and research institutes at home and abroad. Customization of infrared fiber bundles and services such as fiber modification and fiber repair.

Founded in 2005, Nanjing Hecho Technology is a leading provider of non-communicable fiber optic transmission solutions in China. Providing solutions for innovative technologies and products to domestic and foreign customers, allowing the company and customers to enjoy the value enhancement brought by innovation. The company has developed from the original plastic optical fiber manufacturer to a full range of Optical Fiber, Glass Fiber, Quartz Fiber, Fluorescent Fiber and other complete optical fiber products, including Fiber Optic Light Guide, Cold Light Source, Fiber Optic Sensor, machine vision lighting LED light source. Recently, Hecho Technology has passed ISO9001 Quality Management System and ISO14001 Environmental Management System. According to the system audit requirements, the audit expert group will conduct a compliance audit of all doors, all products, whole processes and full coverage on the spot after understanding the establishment and operation of our system. The expert group agreed that our company has established a mature internal mechanism for self-monitoring and improvement, in line with the new era certification standards, and agreed to pass the system certification audit. This system certification audit is a comprehensive test of the standardization and standardization of the company's various management tasks, and is an important guarantee for the company's sustained, stable and healthy development. We will further optimize and standardize various management systems, continuously improve the effectiveness of the system operation, continuously improve the company's management level, and jointly promote the company's rapid development. Nanjing Hecho Technology will continue to provide customers with customized services for fiber optic cold light source, optical fiber bundle and fiber optic sensor to meet the diverse needs of customers in different industries such as industry, medical, lighting and optics, as well as the pursuit of rapid innovation.

According to the provisions of the national statutory holidays, combined with the actual situation of the company, the following arrangements are made for the May Day holiday: 1. The holiday time from May 1 to May 4 holiday, a total of 4 days off. Work began on May 5. 2. Please the staff of the company to do their pre-holiday work arrangements, and check the relevant facilities and equipment, do a good job in fire prevention and security, to ensure the safety and order of the workshop and office. 3. The company's staff should keep the communication during the holiday period smooth, so that the company needs work. 4. The company's holiday activities will be announced separately. It is hoped that all employees should pay attention to their personal safety and financial security during the holidays, and enjoy the holidays happily. Hereby notice! Nanjing Hecho Technology Co., Ltd. 2019-04-26

[Quartz Fiber] An optical fiber in which silica SiO2 is used as a main raw material and the refractive index distribution of the core and the cladding is controlled by the difference in the amount of doping of SiO2. The cladding quartz material is doped (for example, fluorine) to lower the refractive index. Such an optical fiber is a clad-doped quartz fiber or a hard-clad quartz fiber. A Silica Optical Fiber in which a high-purity quartz glass is used as a core and a polymer (resin) having a refractive index slightly lower than that of quartz is a polymer-coated quartz fiber optic fiber or a resin-clad silica fiber. Quartz (glass) series of optical fibers, with a wide transmission wavelength range and high transmission efficiency, are widely used in optical fiber communication and signal and energy transmission. Cladding-doped quartz fiber Hard-clad quartz fiber Polymer clad quartz core fiber Resin coated quartz fiber [Infrared Fiber] The optical fiber capable of transmitting mid-infrared light made of non-silicate material is called infrared fiber, and the wavelength of light of mid-infrared light is between 1.5 and 25 μm. It includes infrared glass fiber, infrared crystal fiber and infrared hollow fiber. For example, fluoride fiber, potassium chloride polycrystalline fiber and gem single crystal fiber, infrared fiber is mostly used for high power laser transmission, infrared sensing and infrared imaging. [UV Fiber] An optical fiber capable of transmitting ultraviolet light having a wavelength ranging from 1 to 380 nm is called an ultraviolet fiber. Currently, the optical fiber that can be used for ultraviolet light transmission includes a quartz fiber, a liquid core fiber, and a sapphire crystal fiber, and the hard-clad quartz fiber HCS specific polymer package The layer of quartz fiber PCS has better UV transmission characteristics, and the UV fiber optics can be used for UV curing and UV detection.

Laser is one of the great inventions of mankind in the 20th century, and it is widely used in many fields. Laser medicine is one of the important branches. The laser is mainly used in the treatment of brain diseases, cardiovascular diseases, diabetes, malignant tumors, leukemia, psychiatric diseases, psoriasis, rhinitis and so on. According to the findings of health medicine, low-intensity lasers have good curative effects in the prevention of the onset of cardio-cerebral vascular disease and the recovery period after onset, and have a certain effect on health and inhibition of human aging. Laser transmission tools, such as rotary light-guiding arm and Laser Fiber, have been rapidly developed, such as the first fiber optic transmission laser in 1973, after Nath made a single Quartz Fiber capable of transmitting high-energy Ar+ lasers. With the advent of mirrors, Silica Fiber heads (spheroidal, granular, etc.) have been developed into various shapes to open the way for lasers to enter the lumen. In 1977, the United States developed a new type of far-infrared fiber, such as bismuth bromide, which was used in the clinical application of CO2 laser fiber. In particular, photodynamic therapy, that is, photosensitizing drugs combined with laser irradiation treatment, laser light sources have evolved from single He-Ne lasers to dye lasers, gold vapor lasers, Krypton (Kr+) lasers, and semiconductor lasers. The scope of photodynamic therapy, from malignant tumors, such as skin cancer, lung cancer, digestive tract tumors, bladder cancer, etc., also extends to the treatment of benign lesions, such as port wine stains, age-related macular degeneration and so on. In the past, laser beauty was limited to skin pigmentation and vascular lesions. It has now developed into cosmetic laser medicine. This is mainly due to Andersen’s “selective photothermal effect” theory in the 1980s, that is, according to different organisms. Learn characteristics, choose the appropriate wavelength, energy, pulse duration, to ensure effective treatment of diseased tissue, while avoiding damage to the surrounding normal tissue. The development of the above-mentioned high-intensity lasers vaporizes, cleaves, coagulates, and cauterizes the lesions of patients and develops them to selectively destroy lesions without damaging normal tissues and achieving therapeutic goals. Supports the production of special optical fiber, laser endoscopes and catheters for interventional treatment. Slit lamps for lasers, laser surgical microscopes, and all types of laser medical equipment required are supplied exclusively by manufacturers.

Nanjing Hecho Technology Co., Ltd. will participate in the 20th China International Optoelectronic Expo (CIOE 2018) held in Shenzhen in September 2018. Nanjing Hecho Technology Co., Ltd. specializes in providing optical fiber transmission solutions. The products are mainly used in medical, industrial automation, optical, and inspection instruments. The company will exhibit traditional superior products, including Fiber Optic Light Guides (plastic fiber, glass fiber, quartz fiber, etc. Non-standard custom fiber bundles), Fiber Optic Illuminators (LED Cold Light and Halogen Light Source), Fiber Optic Sensors and Machine Vision Light Source and other products. The exhibition will be held from September 5th to 8th, 2018. Our booth number is 6D01, 6D01. Welcome new and old customers come to visit and guide!

Color rendering refers to the objective effect produced by light emitted by a light source on an object and the degree of appearance of the true color of the object, which is an important indicator of the illumination light source. The light source with high color rendering performs better on the color, the color seen is close to the natural color, and the light source with low color rendering performs poorly on the color, and the color deviation seen is also large. If the light emitted by the light source contains a proportion of each color of light that is similar to natural light, the colors seen by the human eye are more realistic. The spectral distribution of the light source determines the color rendering of the light source. The color rendering of the light source affects the color of the object observed by the human eye. Quantitative evaluation of the color rendering property of the light source is an important indicator for evaluating the quality of the light source. General artificial lighting sources use the general color rendering index as an evaluation index of color rendering, and the color rendering index is also an important parameter to measure the color characteristics of the light source. According to different application fields, Nanjing Hecho Technology Co., Ltd. launched a new ultra-bright high color rendering index medical Endoscope Light Source Module; ultra-high brightness LED Cold Light Source, and Fiber Optic Illuminators and other products to meet the needs of different customers, welcome The majority of new and old customers to inquire. Close

Dear Customers: Happy New Year! Nanjing Hecho Technology Co., Ltd. will participate in the LASER WORLD OF PHOTONICS CHINA which held in SHANGHAI from March 20 to 22, 2019. Hecho Fibers specializes in manufacturing Customized Fiber Optic products, which are mainly used in medical, industrial automation, optical, and inspection instruments. Product range including: Fiber Optic Bundles (Flexible Light Guide, Glass Light Guide, Quartz Light Guide, UV Light Guide, etc...), Fiber Optic Illuminators (LED Light Source and Halogen Light Source), Fiber Optic Sensor and Machine Vision Light Source and other products. The exhibition will be held from March 20th to 22nd, 2019. Our booth number is OW7: 7314. Welcome to visit!

Dear Valued Customers: The Year of 2019 is coming, hereon sincere gratitude for efforts and support last year. We wish you and your family of health and wellbeing. A very Merry Christmas and Happy New Year 2019! The notice of the new year holiday is as follows: >>>>> On Dec. 30th (Sunday) to Jan 1st (Tuesday), there is a holiday for 3 days<<<<< Tips: During the festival, if you have any questions about Fiber Optic Illuminator (Cold Light Source, LED Light Source, Halogen Light Source), Fiber Optic Bundles (Standard Light Guides & Customized Light Guide) and Fiber Optic Sensor, please leave a message, We will reply in time, thank you! Nanjing Hecho Technology Co., Ltd 2018-12-21