leaf spring for train100+ factories verified

Kingrail Parts is one of China's most professional railway wheel manufacturers. We produce railway wheels of various sizes for high-speed trains, freight trains, subways, locomotives, passenger trains, and rail vehicles.

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Dongguan Caiyin Hardware Spring Co., Ltd. is a professional manufacturer specializing in various springs since the year of 2006. With 14years development, our main products are die spring, compression spring, extension spring, torsion spring, disc spring, gas spring, leaf spring, as well as some mould accessories. Factory is located in Wanjiang town, having a complete advanced production and test line1 heat treatment line, 4 auto spring coilers, 4 automatic CNC end face spring grinders, 1 shot blasting machine. The production capacity is 3000000 Pieces/week. Our company enjoys high reputation in this field all over the world, like Middle East, South America, Western Europe, Eastern Europe, Russian Federation, West Asia, Southeast Aisa and China Mainland. We welcome partners and friends come and visit. We will keep improving better service for all of you.

Shandong Tongjia International Supply Chain Management Co., Ltd. Was established in 2003. In 2012, the company established its own brand WMDI, and in 2014, Perfect Power Parts Co., Ltd. We are engaged in the sales of heavy-duty trucks and truck parts, mainly covering China National Heavy Duty Truck HOWO series, Shakman, Foton, Jiefang, Dongfeng and other truck brands. From heavy-duty truck parts to complete vehicles and various types of engineering machinery vehicles, we have explored a brand-new foreign trade industry chain. Over the past 20 years, the company has always focused on the country's "Belt and Road" initiative, carefully planned the direction of corporate development, based in China and looking at the world. It has represented, accepted and managed the export business of nearly 100 companies, and its service scope covers Africa, the Middle East, Southeast Asia, South America, Central and Eastern Europe and other countries, providing strong support for the export of goods required for infrastructure construction such as road transportation, hydropower construction, health and sports, and has been widely praised by central and local enterprises such as China Construction and China Railway Corporation.

Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.

Established in 1980, Sino Industry and Trade Co., Ltd. (hereinafter referred to "SITC") is a leading foundry manufacturer specializing in the design, research, development, manufacture and marketing in the foundry industry. Being one of major suppliers of customized parts for automobile manufacturers spreaded all over the world, the company is commited to offer high quality products with competitive prices and excellent service worldwide.

Qingdao jieshengda Machinery Co., Ltd. is a production enterprise integrating metal and non-metal product manufacturing, mechanical parts processing, mechanical equipment design, R & D, assembly and manufacturing. At home, our company mainly serves wholly foreign-owned enterprises and large domestic enterprises such as Japan, the United States and Germany. Abroad, our services are mainly for countries and regions such as Europe, South America, North America, the Middle East, East Asia and South Asia.

Xiamen Lahoo Auto Parts Co., Ltd. is a leading manufacturer of high-quality automotive components based in Xiamen, China. Guided by the principle of "Quality First, Service Foremost, " we integrate R&D, production, sales, and after-sales services to deliver specialized solutions for semi-trailers, agricultural trailers, RVs, boat trailers, and chassis components. Our core products include axles, leaf springs, suspension systems, wheels, towing systems, and brake parts, all ISO/TS16949-certified and exported to over 20 countries worldwide.

Chongqing XinRail Technology Co., Ltd. is a leading enterprise specializing in the railway and rail transit sectors, with a focus on providing comprehensive solutions for railway components and accessories. Established in 1999 and headquartered in Chongqing, China, the company has rapidly become a significant player in the international rail transit industry.

Ningbo Yinzhou Nord Machinery Co., Ltd. is a compositive strength company, engaged in different fields of parts manufacturing. Now we successfully own three subsidiaries, they are Parfect Casting Limited, Parfect Forging Limited & Parfect Engineering Machinery Co., Ltd.

Xiamen Changchun Import & Export Co., Ltd, is located in guankou Town, Jimei District, Xiamen City, which is one of the world's leading fastener production and export bases in China. Our company specializes in producing all kinds of high-strength fasteners, with monthly production capacity of 1, 000 tons, with annual sales of more than 80 million yuan.

Farview Spring is a subsidiary of Farview International specializing in the production of various hot roll and cold roll springs. It was established in 2008. The company is located in Cangzhou City, Hebei Province, only 150 kilometers away from Tianjin Port.

Zhuji Bosswinn Springs Co., Ltd. is situated in the West-Suburb Industrial Zone of Zhuji City. Its subsidiary, Zhuji Lida Spring Factory, was founded in 1992. Subsequently, Zhuji Bosswinn Springs Co., Ltd. And Zhuji Bosswinn Precision Machinery Co., Ltd. Were established. Together, these three entities possess registered assets amounting to 31.25 million yuan and occupy factory premises spanning over 9, 000 square meters. The primary business scope has evolved from the initial production of springs to encompass the manufacturing of metal stamping parts and CNC precision parts machining.

Qingdao Xinquanxi Metal Products Co., Ltd. Was established in 2001 (formerly known as Qingdao Quanxi Rigging Hardware Co., Ltd. ), located in Wangyanzhuang North Village, Lancun Town, Jimo District, Qingdao city. In the early stage of establishment, the company mainly engaged in the production and sales of JIS turnbuckles and forging shackle, and successfully entered the Japanese market with high quality products and established the foreign trade Department. With the continuous development of the company's business, in September 2019, it merged with Qingdao Ruihongjie Industry and Trade Co., Ltd., and changed the company name to Qingdao Xinquanxi Metal Products Co., Ltd. At the same time, the business scope has gradually expanded, the main production and operation of rigging, wire rope connection parts, precision machining, Pole line hardware, Marine and automotive connection parts, all kinds of forging, sheet metal, stamping, casting and other products.

Yangzhou Baijia Spring Manufacturing Co., Ltd., founded in 2005, is specialized in the production of spring, located in the beautiful, historical and cultural city - yangzhou, water, land and air transportation is convenient, the geographical position is superior

Steel is the mother of industry, the eternal sunrise industry. We Qingdao Guardx Industry Co Ltd Committed to modern industrial construction decdes become an expert in this area. Our business scope including auto, truck, railway equipment and heavy equipment, also for residential construction parts. We are steel guard also we are your business Guardx.

Ma'anshan Railwheel Industrial Technology is a leading train parts manufacturer in China, we produce a wide range of railway equipment products such as freight cars, passenger cars (wagon), freight car and passenger car accessories, passenger car interiors, locomotive accessories and so on.

Chitian Motors Co., Ltd. Introduction

Established in 2014 and formerly known as Changzhou Ristar Electronic & Machinery Co., Ltd., our company has been rebranded as Changzhou Aodudu Leisure Co., Ltd. Since January 13th,   2026.

Guizhou Zhonghui Heavy Industry Co., Ltd. is located in Guiyang Economic Development Zone, Guiyang City is the key tourism equipment manufacturing enterprises. The company has 163 employees, including 38 engineering and technical personnel, 3 senior engineers and 19 engineers. Built material preparation, welding, painting, assembly production line, testing line, with vehicle cathode electrophoresis, shot blasting rust, German technology intelligent CNC bending machine and other more than 300 sets of advanced production equipment. It has the ability of body sheet metal forming, welding, vehicle electrophoresis and general assembly. With many years of structural parts, sheet metal parts, FRP parts production experience and complete mature production technology, has a group of employees with rich work experience, has a strong product development ability and quality assurance ability. The company has passed ISO9001 quality certification, safety standardization certification, etc.

Winner Electric Vehicle, the head office,  is located in Guangzhou China.  And Opened a branch in Beijing. The company has established a production base in Linyi County, Dezhou City, Shandong Province,  integrating not only R&D and manufacturing, but also trade and top after sales services as well. We're proud to have two excellent industry production bases, which consolidates our leading position as a power transmission and distribution service provider and a leader in the new energy electric vehicle industry. Our products have been exported to many countries all over the world during the past 13 years. The company's main products of electric vehicle include: Electric sightseeing cars, electric golf carts, electric patrol cars, electric transport trucks, electric food delivery trucks, electric fire trucks, etc. The products are sold well all over the world and are widely used in scenic spots, parks, community properties, university campuses and other fields. We own 54000 square meters factory park, 36000 square meters plant area, more than 50000 pieces output and more than 200 employees. At Winner Power Energy, we never compromise on quality. Our stringent standards ensure that you receive reliable and efficient products every time. With our industry expertise and experience, we are your preferred choice for meeting all your electric vehicle needs. Our commitment to quality and customer satisfaction makes us a trusted partner for companies worldwide. We look forward to discussing how our products can support your projects and meet your specific requirements.  

WOSHENG VEHICLE is a famous brand of trailer manufacturer and truck supplier with 10+ years of experience from China.

Huayue, is the leading distributor for 'FAW' brand in terms of sales. Our company has successfully partnered with China FAW, establishing direct sales centers in Wuhan, Xiangyang, Suizhou, Yichang, and other locations in Hubei. Annually, we sell over 1, 200 units of 'FAW' commercial vehicles and receive high acclaim for our semi trailers of 'Honggang' brand. Moreover, we serve as a key equipment supplier for logistics companies like SF Express.

Qingdao Juyuan International Trading Co., Ltd. Located in one of the China's most important foreign trade ports-Qingdao, Shandong province. Our company is an industry and trade integration company, with our own factory name: Shandong Juyuan Automobile Technology Co., Ltd.

Shandong Dongyue Yongsheng Automotive Axle Co., Ltd. Was established in December 2006 and is a professional manufacturer of automotive rear axles that integrates design, research and development, production, and assembly. In March 2023, the company cooperated with Qilu Caijin Group and officially became the new energy vehicle rear axle research and production base of the group. Located in Laiwu District, Shandong Province, the company covers an area of 86, 000 square meters and has more than 200 employees. Its annual output is 200, 000 sets of rear axles. The company is a national high-tech enterprise, a national intellectual property demonstration enterprise, a Shandong patent star enterprise, a Shandong low-carbon outstanding contribution unit, a Shandong enterprise technology center, and a Shandong industrial design center. It has advanced automotive axle production lines in China, including welding and processing production lines for rear axle shells, differential gear assembly production lines, main reduction gear assembly production lines, wheel hub assembly production lines, and rear axle assembly production lines. The products are divided into two parts: New energy vehicle electric drive axles and fuel vehicle drive axles. Major customers include Weichai New Energy Commercial Vehicle Co., Ltd., Shandong Kama Automobile Manufacturing Co., Ltd., Shandong Dongfeng Kama Automobile Co., Ltd., Geely New Energy Commercial Vehicle Group Co., Ltd., Chengdu Dayun Automobile Group Co., Ltd., and Shanghai Datong Commercial Vehicle Co., Ltd. The company has obtained IATF 16949: 2016 quality management system certification, ISO 14001: 2015 environmental management system certification, ISO 45001: 2018 occupational health and safety management system certification, ISO 50001: 2018 energy management system certification, and GB/T 29490: 2013 intellectual property management system certification.

QINGDAO QUEST VEHICLE EQUIPMENT Co., Ltd is a growing enterprise in trailer manufacturing and HOWO truck, trailer parts and equipment distributing since 1999. QUEST VEHICLE is focused on becoming an international partner in modern transportation, dedicated to manufacturing industry-leading trailers and truck equipment to customers worldwide.

Qingdao Everlasting Auto Parts Co., Ltd. Was founded in 2018.

Shandong Dingsheng International Trade Co., Ltd. (subsidiary) is located at the intersection of National Highway 220 and Jinan Liangshan Highway, with Liangshan Port to the north, Beijing Xiongshang High speed Railway to the west, Juanyun Expressway to the south, and Jiguang Expressway to the east, enjoying a superior geographical location. The enterprise covers an area of 100000 square meters and currently has over 100 sets of various automated intelligent production equipment. It has more than 170 employees, including 16 personnel with senior professional titles or above and 118 professional and technical personnel. Relying on strong technical strength, a comprehensive quality assurance system, and modern testing methods, Dingsheng Special Vehicle Manufacturing Co., Ltd. Has always been at the forefront of specialized vehicle manufacturing technology.

TOURFINE company is one of china's leading professional exporter of trucks and construction machinery. We specialized in providing famous, high quality and reasonable price trucks and construction machine.

HUNAN SHAOLI GROUP ELECTRIC Co., Ltd.