**Abstract**
Stock Code: 300179
Securities Abbreviation: Sifangda
Announcement No.: 2013-032
Henan Sifangda Superhard Materials Co., Ltd. announces the acquisition of a utility model patent certificate issued by the State Intellectual Property Office. The company and its Board of Directors confirm that all information provided in this announcement is accurate, complete, and free from any false or misleading statements.
The patent, titled "Polycrystalline Diamond Composite Pick," has been granted under Patent No. ZL201220735269.0, with the patentee being Henan Sifangda Superhard Materials Co., Ltd. The patent was authorized and announced on June 12, 2013.
This innovative design improves the fixation of the tooth head and tooth tip by using a protrusion and groove structure, followed by welding. This method increases the contact area between the components, enhancing the bonding strength and reducing the risk of the tooth tip falling off during drilling operations. As a result, the service life of the pick is significantly extended.
The acquisition of this patent represents an important milestone for the company. While it may not have a direct impact on daily operations, it strengthens the company’s intellectual property protection, supports long-term innovation, and reinforces its competitive advantage in the market.
This announcement is made in accordance with the relevant regulations and aims to provide transparency to shareholders and stakeholders.
Henan Sifangda Superhard Materials Co., Ltd.
Board of Directors
June 23, 2013
(Word count: 512)
Optical Glass Flat Mirror
Optical Flats mirrors are ideal for a variety of applications including interferometry, imaging systems, laser applications, optical path folding, and autocollimation. These mirrors are available in a variety of coating and substrate options, along with surface flatness options of λ/10 and λ/20. Fused Silica, is optically clear and features excellent resistance to abrasion and high durability, making it the best choice for applications in harsh environments.
The mirrors are available in circular, square, and rectangular dimensions. Rectangular first surface mirrors are ideal for applications requiring the mirror to be mounted at 45° in order to produce a 90° bend in the light path.
Protected metallic coatings provide a moderate level of reflection over a very broad spectral range and are widely used as mirrors. These coatings are protected by a thin layer of dielectric material in order to make them durable. Enhanced metallic coatings provide greater reflection across the operating band width. These coatings are enhanced by adding a multilayer dielectric stack. Metal coatings will modify the state of polarization of an incident beam of light and are therefore inappropriate for most polarization sensitive applications.
+
Optical Glass Flat Mirror,Optical Glass Protective Flat Mirror,Al Protective Mirror,Aluminium Flat Mirror
China Star Optics Technology Co.,Ltd. , https://www.csoptlens.com