On June 25-27, 2013, the "13th World Pharmaceutical Raw Materials China Exhibition" and "2013" sponsored by the China Chamber of Commerce for the Import and Export of Medicinal Health Products and the European Bowen Exhibition Consulting Co., Ltd. and co-organized by Shanghai Bohua International Exhibition Co., Ltd. World Exhibition Customization Service China Exhibition†and “2013 World Pharmaceutical Machinery, Packaging Equipment and Materials China Exhibition†and “2013 World Biochemical, Analytical Instrument and Laboratory Equipment China Exhibition†were held at Shanghai New International Expo Center. This exhibition is dedicated to creating a Serves the commerce and trade platform in the pharmaceutical industry and related fields.
Zhejiang Xiaolun Pharmaceutical Machinery Co., Ltd. made its debut at the exhibition P-MEC China 2013. For more information, please see the website exhibition topic. ã€Click on the topic】
Zhejiang Xiaolun Pharmaceutical Machinery Co., Ltd. is a Sino-foreign joint venture invested by Wenzhou Pharmaceutical Equipment Factory and Australia Central Darren International Investment Group Co., Ltd. The company is a well-known manufacturer specializing in the production and sales of pharmaceutical equipment for Ya Ya licensing solid preparations. In line with the tenet of “Vowing to provide high-quality pharmaceutical equipment for human healthâ€, the company strictly researches, develops and produces pharmaceutical machinery with international advanced level in accordance with GMP requirements.
With advanced manufacturing technology, stable performance, and high quality, the company owns 30 patents of independent intellectual property rights (including 4 invention patents). Leading products, such as efficient coating machine series, mixer series, and pulverizing whole machine series, have passed the provincial appraisal and reached the advanced level of the same equipment in the 1990s. The first-class service system and high-quality products make Yiyao Pharmaceutical Machinery become the preferred brand for many pharmaceutical companies at home and abroad.
ã€China Chemical Machinery Network original article, reproduced please indicate the source! 】
Asbestos was added as an common ingredient to Brake Pads post-WWI, as car speeds began to increase, because research showed that its properties allowed it to absorb the heat (which can reach 500 °F) while still providing the friction necessary to stop a vehicle. However, as the serious health-related hazards of asbestos eventually started to become apparent, other materials had to be found. Asbestos brake pads have largely been replaced by non-asbestos organic (NAO) materials in first world countries. Today, brake pad materials are classified into one of four principal categories, as follows:
Non-metallic materials - these are made from a combination of various synthetic substances bonded into a composite, principally in the form of cellulose, aramid, PAN, and sintered glass. They are gentle on rotors, but produce a fair amount of dust, thus having a short service life.
Semi-metallic materials - synthetics mixed with varying proportions of flaked metals. These are harder than non-metallic pads, more fade-resistant and longer lasting, but at the cost of increased wear to the rotor/drum which then must be replaced sooner. They also require more actuating force than non-metallic pads in order to generate braking torque.
Fully metallic materials - these pads are used only in racing vehicles, and are composed of sintered steel without any synthetic additives. They are very long-lasting, but require more force to slow a vehicle while wearing off the rotors faster. They also tend to be very loud.
Ceramic materials - Composed of clay and porcelain bonded to copper flakes and filaments, these are a good compromise between the durability of the metal pads, grip and fade resistance of the synthetic variety. Their principal drawback, however, is that unlike the previous three types, despite the presence of the copper (which has a high thermal conductivity), ceramic pads generally do not dissipate heat well, which can eventually cause the pads or other components of the braking system to warp.However, because the ceramic materials causes the braking sound to be elevated beyond that of human hearing, they are exceptionally quiet.
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