CSB

CSB, formally Zhejiang Changsheng Sliding Bearing Co., Ltd., is a Chinese high-tech enterprise specializing in the research, development, production, and sale of self-lubricating bearings. Founded in June 1995 as Jiashan Changsheng Sliding Bearing Co., Ltd., the company was listed on the Shenzhen Stock Exchange ChiNext in November 2017 under stock code 300718. Its headquarters are located at No. 6 Xinda Road, Huimin Street Economic Development Zone, Jiashan County, Zhejiang Province. The company's core products include bimetallic self-lubricating bearings, metal-polymer composite bearings, metal-based self-lubricating bearings, and plastic self-lubricating bearings. These products are widely used in automotive, new energy vehicles, construction machinery, agricultural machinery, aerospace, high-speed trains, fluid power, and nuclear power industries. CSB exports to Europe, America, Japan, and other countries and regions, serving more than 40 countries worldwide. CSB has been recognized as a national-level specialized and sophisticated "little giant" enterprise, a national green factory, and a national intellectual property demonstration enterprise. It holds over 140 authorized patents and has participated in the formulation of 46 national standards. The company operates a provincial-level research institute, the Zhejiang Changsheng Sliding Bearing Technology Research Institute, which focuses on self-lubricating materials and tribology solutions. CSB's brand positioning emphasizes self-lubrication, lightweight design, low maintenance, low noise, low cost, long life, environmental protection, wear resistance, and corrosion resistance.

Zhejiang Changsheng Sliding Bearing Co., Ltd. was founded in June 1995 as Jiashan Changsheng Sliding Bearing Co., Ltd. In 1997, the company successfully developed solid-embedded self-lubricating bearings and officially entered overseas markets. In 2000, it expanded its factory buildings and began supplying self-lubricating bearing products for major water conservancy projects at home and abroad. In 2002, the company expanded its plant area, established a wholly-owned subsidiary, Jiashan Changsheng Self-Lubricating Material Co., Ltd., to expand material production capacity, and was approved to establish the "Jiashan County Sliding Bearing Material Technology Research and Development Center." In 2003, it passed the Rhine TS/16949 certification and entered the automotive OEM market. In 2005, it was recognized by the Ministry of Science and Technology as a key high-tech enterprise under the National Torch Plan and began exporting large metal-based solid lubricating bearings for major water conservancy projects in India. In 2006, its friction welding products entered Caterpillar's global supply chain. In 2008, it established a provincial-level self-lubricating material research and development center and led the establishment of the Self-Lubricating Bearing Sub-Technical Committee of the National Sliding Bearing Standardization Technical Committee, serving as the first secretariat unit. In 2009, it established Zhejiang Changsheng Plastic Bearing Technology Co., Ltd. and Zhejiang Changsheng Bearing Technology Co., Ltd., and launched high-performance resin swash plates for air-conditioning compressors. In 2011, the company was restructured into a joint-stock company and was recognized as a "Zhejiang Province Fifth Batch Innovative Demonstration Enterprise," "Zhejiang Province Green Enterprise," and "Zhejiang Province Standard Innovation Enterprise." In 2012, it successfully developed lead-free bimetallic materials and obtained provincial-level innovation team and high-tech enterprise titles. In 2013, it was awarded "Zhejiang Export Famous Brand" and other honors, and provided self-lubricating bearings for major projects such as Shanghai Tower and Singapore National Stadium. In 2015, Zhejiang Changsheng Sliding Bearing Technology Research Institute was approved and recognized as a provincial-level enterprise research institute, and the company successfully developed nuclear power-specific self-lubricating bearings. In 2016, the headquarters moved to No. 6 Xinda Road, Jiashan Economic Development Zone, and its products for reactor pressure vessel supports and steam generator supports passed expert appraisal organized by the China Nuclear Energy Association, filling domestic gaps and reaching international advanced levels. In November 2017, the company was successfully listed on the ChiNext Board of the Shenzhen Stock Exchange. In 2018, it was recognized as a national-level specialized and sophisticated "little giant" enterprise. In 2019, it was awarded the title of national green factory. In 2022, it was recognized as a national intellectual property demonstration enterprise. In 2023, it obtained the "Zhejiang Manufacturing" brand certification. In 2024, it continued to expand its research and development efforts. In 2025, it further strengthened its global marketing network. In 2026, it aims to become a world-class tribology and self-lubricating technology research institute.

• 2026

  Aims to become a world-class tribology and self-lubricating technology research institute.

• 2025

  Further strengthened its global marketing network.

• 2024

  Continued to expand research and development efforts.

• 2023

  Obtained the 'Zhejiang Manufacturing' brand certification.

• 2022

  Recognized as a national intellectual property demonstration enterprise.

• 2019

  Awarded the title of national green factory.

• 2018

  Recognized as a national-level specialized and sophisticated 'little giant' enterprise.

• 2017

  Successfully listed on the ChiNext Board of the Shenzhen Stock Exchange in November (stock code 300718).

• 2016

  Headquarters moved to No. 6 Xinda Road, Jiashan Economic Development Zone; products for reactor pressure vessel supports and steam generator supports passed expert appraisal organized by the China Nuclear Energy Association, filling domestic gaps and reaching international advanced levels.

• 2015

  Zhejiang Changsheng Sliding Bearing Technology Research Institute approved and recognized as a provincial-level enterprise research institute; successfully developed nuclear power-specific self-lubricating bearings.

• 2013

  Awarded Zhejiang Export Famous Brand and other honors; provided self-lubricating bearings for major projects such as Shanghai Tower and Singapore National Stadium.

• 2012

  Successfully developed lead-free bimetallic materials; obtained provincial-level innovation team and high-tech enterprise titles.

• 2011

  Restructured into a joint-stock company; recognized as Zhejiang Province Fifth Batch Innovative Demonstration Enterprise, Zhejiang Province Green Enterprise, and Zhejiang Province Standard Innovation Enterprise.

• 2009

  Established Zhejiang Changsheng Plastic Bearing Technology Co., Ltd. and Zhejiang Changsheng Bearing Technology Co., Ltd.; launched high-performance resin swash plates for air-conditioning compressors.

• 2008

  Established provincial-level self-lubricating material R&D center; led the establishment of the Self-Lubricating Bearing Sub-Technical Committee of the National Sliding Bearing Standardization Technical Committee and served as the first secretariat unit.

• 2006

  Friction welding products entered Caterpillar's global supply chain.

• 2005

  Recognized as a key high-tech enterprise under the National Torch Plan by the Ministry of Science and Technology; began exporting large metal-based solid lubricating bearings for major water conservancy projects in India.

• 2003

  Passed Rhine TS/16949 certification and entered the automotive OEM market.

• 2002

  Expanded plant area, established wholly-owned subsidiary Jiashan Changsheng Self-Lubricating Material Co., Ltd., and was approved to establish the Jiashan County Sliding Bearing Material Technology R&D Center.

• 2000

  Expanded factory buildings and supplied self-lubricating bearings for major water conservancy projects at home and abroad.

• 1997

  Successfully developed solid-embedded self-lubricating bearings and officially entered overseas markets.

• 1995

  Company founded in June as Jiashan Changsheng Sliding Bearing Co., Ltd.

Industrial bearing supplier

• CSB-50

  Material structure: low carbon steel + porous copper powder + PTFE/additives. Features: suitable for parts that cannot or are difficult to lubricate, good wear resistance, low friction coefficient, good running-in performance, low noise, no pollution. Typical applications: automotive industry, general industry, home appliances.

• CSB-50MP

  Material structure: low carbon steel + porous copper powder + PTFE/fluorine resin. Features: designed for high wear resistance, dry friction self-lubrication, high-frequency oscillation, maintenance-free requirements. Typical applications: automotive tensioner pulleys.

• CSB-50MA

  Material structure: low carbon steel + porous copper powder + PTFE/additives. Features: designed for high and low temperature resistance, salt spray resistance, self-lubrication, maintenance-free requirements. Typical applications: aerospace.

• CSB-50MB

  Material structure: low carbon steel + porous copper powder + PTFE/additives. Features: thicker lining layer, can meet post-assembly re-machining requirements for high-precision fit, excellent fatigue strength and cavitation resistance, designed for high speed, fluid lubrication, cavitation resistance, self-lubrication, maintenance-free requirements. Typical applications: air-conditioning compressors, hydraulic motors, hydraulic pumps and other fluid lubrication fields.

• CSB-50MC

  Material structure: low carbon steel + irregular copper powder + PTFE/additives. Features: re-machinable, designed for high speed, fluid lubrication, self-lubrication, maintenance-free requirements. Typical applications: air-conditioning compressors.

• CSB-50EC

  Material structure: low carbon steel + porous copper powder + PTFE/additives. Features: added conductive materials to meet post-assembly electroplating requirements, designed resistance value ≤1000 ohms. Typical applications: automotive hinges, seat frames, seat adjustment mechanisms and other interference fit conditions.

• CSB-50Y

  Material structure: low carbon steel + porous copper powder + PTFE/additives. Features: designed for grease lubrication, high wear resistance, maintenance-free requirements. Typical applications: automotive seat recliners.

• CSB-55

  Material structure: stainless steel + porous copper powder + PTFE/additives. Features: designed for grease lubrication, self-lubrication, maintenance-free requirements. Typical applications: automotive door hinges, automotive welcome pedals and other occasions requiring high corrosion resistance.

• CSB-40

  Material structure: low carbon steel + porous copper powder + PTFE/oleophilic fiber. Features: designed for high-speed medium-to-high load conditions under fluid lubrication, oleophilic fiber improves performance under fluid lubrication, good cavitation erosion resistance and fluid corrosion resistance. Typical applications: automotive suspension systems, shock absorbers, power steering pumps, steering systems, gearboxes, hydraulic motors, gear pumps, plunger pumps, vane pumps, cylinder guide sleeves, logistics machinery.

• CSB-40HL

  Material structure: low carbon steel + porous copper powder + PTFE/oleophilic fiber. Features: excellent low friction and wear resistance, excellent fatigue strength and cavitation erosion resistance. Typical applications: automotive air-conditioning compressors, gearboxes, transmissions, shock absorbers, high-pressure common rail systems, power steering pumps, hydraulic plunger pumps, hydraulic motors, cylinder guide sleeves, logistics machinery.

• 2019

  Regulatory letter over misuse of raised funds; RMB 100 million investment unpaid draws SZSE scrutiny

  In July 2019 Changsheng Bearing received a regulatory letter from the Shenzhen Stock Exchange for violations in the use of raised funds. In March 2023, the partnership in which it invested RMB 100 million, Chengdu Cen Hongyi, could not repay principal and returns, and its business registration did not match the company's disclosure. The Shenzhen Stock Exchange issued a letter of concern asking about the equity structure, losses and truthfulness of information disclosure. The actual controller paid out of his own pocket to cover the losses. Regulatory letter, letter of concern.

  Source

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1. 1浙江长盛滑动轴承股份有限公司官网csb.com.cn
2. 2关于长盛_浙江长盛滑动轴承股份有限公司csb.com.cn
3. 3产品中心_浙江长盛滑动轴承股份有限公司csb.com.cn
4. 4研究院简介_浙江长盛滑动轴承股份有限公司csb.com.cn
5. 5Regulatory letter over misuse of raised funds; RMB 100 million investment unpaid draws SZSE scrutinyfinance.ce.cn
6. 6Regulatory letter over misuse of raised funds; RMB 100 million investment unpaid draws SZSE scrutinytmtpost.com
7. 7Regulatory letter over misuse of raised funds; RMB 100 million investment unpaid draws SZSE scrutinyreportdocs.static.szse.cn