ventilation system pipe2,000+ factories verified

Qingdao Simingrui Precise Technology Co., Ltd. is a modern packaging products enterprise integrating foam-product production, mold design and machinery manufacture. We have two production bases locate in Qingdao and Zouping in Shandong province, covering exceed 50, 000 square meters and is one of the largest professional manufacturing factories in China at present.

Different kinds of products are available in our company. We're pleased to get your Inquiry and we will reply you as soon as possible. We stick to the principle of "quality first, service first, continuous improvement and innovation to meet the customers" for the management and "zero defect, zero complaints" as the quality objective.

Suzhou Rainbow Environmental Equipment Co., Ltd., established in 1993, is a professional factory of chimneys. It is located in the new and high-tech development zone, as the pioneer for chimney in China. Suzhou Rainbow specializes in high temperature steel gas pipeline design and manufacture. After 30 years practice in research and development, production and sale of prefabricated stainless steel chimneys, Rainbow has become the leading manufacturer in this field.

JNFLEX (CHANGZHOU) Co., Ltd. (formerly known as Changzhou Jiangnan Prestressed Corrugated Pipe Factory), established in 1995 and located in Changzhou, Jiangsu province, is a high-tech enterprise dedicated to providing customers with flexible connection and protection products and solutions. We specialize in the design, development, production, and technical service of various corrugated ducts, flexible ducts and tubes, stainless bellows, and a variety of plastic corrugated hoses. Since 1995, JNFLEX has grown into a large-scale enterprise with over 120 employees, more than 20% of whom are R&D personnel, and has obtained ISO9001 and IATF16949 certifications. Our products serve a variety of industries, including construction and infrastructure, automotive and marine, high-speed trains, steel metallurgy, environmental protection, and the new energy industry. All Material Manufacturing Is Done By Trained And Experience Man Power With The Help Of High Tech Machineries. We have established long-term collaborations with Fortune 500 companies both domestically and internationally. Our sales network spans more than twenty provinces, municipalities, and autonomous regions across China, and we have exported to Europe, North America, Southeast Asia, Australia, South America, and Africa for many years.

Jiangsu Hongshuo Metal Technology Co., Ltd. is a leading steel trader in eastern China. The company's warehouse has a constant inventory of various types of steel, including coils, sheets, and pipes. We specialize in providing customers with various types of stainless steel plates, coils, pipes, as well as carbon steel, galvanized steel, and aluminum coils, plates, and pipes.

XICHENG EP Ltd is located in Guangming District, Shenzhen. It is an environmental protection equipment manufacturer focusing on the environmental protection industry for many years and specializing in the production and sales of environmental protection equipment and various accessories. We are committed to providing quality products and services to our customers in scientific management mode.

Hebei Hongjiang Rubber & Plastic Technology Co., Ltd. is a professional manufacturer of industrial hoses. Our main products are: PVC hoses, Pneumatic Hose, Duct& Vacuum Hose, Irrigation Hoses, Industrial Hoses, Rubber Hose, Food Grade Hoses, Hose Coupling & Clamps etc. We engage in the middle and high-end market because we only supply high quality products. By now we have established stable trade relations with more than forty countries and districts.

Jinan Bestar Inc. is a professional supplier in China, specializing in refrigeration parts. Our main products are refrigerator parts. Now we have two factories in China, manufacturing different kinds of refrigeration parts. One is mainly manufacturing condensers and evaporators. The other one is mainly manufacturing copper filter driers, accumulators and access valves.

Guangdong Haowei New Material Technology Co., Ltd. is a leading high-tech enterprise specializing in the research, development, production, and sales of advanced plastic materials and solutions. Our product portfolio includes PP sheets, PP pipes, thermoplastic sheets, innovative new plastic materials, and a wide range of eco-friendly equipment. Founded 17 years ago, the company has accumulated rich industry experience and built a solid reputation for professionalism and reliability. We are located at Building A2-2, Putang Development Zone, Shuanghe Town, Heshan City, Guangdong Province, China (Postal Code: 529728). Our modern factory covers 10, 000 square meters with an annual output capacity of 15, 000 tons. By introducing advanced production lines and adopting rigorous quality management systems, Haowei ensures that every product meets both domestic and international standards. Our PP sheets and thermoplastic products are highly valued for their strength, durability, corrosion resistance, cold resistance, electrical insulation, smooth surface, and bright appearance. These performance advantages make them widely applicable across industries such as: • Environmental Protection: Wastewater treatment equipment, exhaust gas purification systems, chemical-resistant tanks, and pipelines. • Agriculture & Animal Husbandry: Greenhouse facilities, aquaculture systems, feeding troughs, and protective barriers. • Industrial & Mechanical Engineering: Machine components, lining boards, conveyor systems, and protective panels. • Laboratories & Cleanrooms: Wall cladding, furniture, fume hoods, and work surfaces. • Electronics & New Energy: Insulation materials, lithium battery components, and precision plastic parts.  Over the years, Haowei has earned the trust of high-end clients at home and abroad, thanks to our consistent focus on quality and service. To better serve global markets, the company has obtained ISO9001 Quality Management System certification and adheres to international environmental protection standards. With advanced testing equipment, strict inspection processes, and a commitment to continuous improvement, our products are exported to multiple countries and regions worldwide. Beyond our products, Haowei upholds the values of innovation, quality, sustainability, and customer-first service. We continuously invest in R&D to develop new materials that meet the evolving demands of modern industries, while maintaining an environmentally responsible approach. Our technical team also provides customized solutions tailored to the specific requirements of different applications. With 17 years of expertise, a spirit of innovation, and strong partnerships with high-end clients, Guangdong Haowei New Material Technology Co., Ltd. is committed to becoming not only a leading supplier in China but also a trusted partner in the global plastics and new materials industry.  

Company Profile

Mengyin Runlu Import And Export Trading Co., Ltd. is a modern enterprise focusing on research and development, production, sales and service. It covers an area of more than 100 mu, has more than 30 PVC production lines, and has more than 100 employees. It is located in Mengyin County, Linyi City, Shandong Province, which is the main producing place of drilling RIGS in China. Railway, road, air and other convenient transportation, enjoy superior transportation advantages.

Hebei Yukuo FRP Manufacturing Co., Ltd always regards product quality as the foundation of enterprise development. Over the years, our company has carried out scientific and standardized management in strict accordance with the modern enterprise model. According to the customers feedbacks and based on global market we have set up a series of services and tactics. Based on science and technology, we have innovated varied products and achieved domestic and worldwide fame. The company has perfect testing equipments, strong technical support, providing customers with quality services. Our products are sold all over the world, and deeply trusted by users!

Deqing Chenxuan Energy Saving Technology Co., Ltd. is a professional manufacturer of high-performance thermal insulation materials, based in Huzhou, Zhejiang Province, China.  

Yantai Guocheng Metal Co., Ltd. Was established in 2017, specializing in the production of metal products and accessories. As a comprehensive metal processing and manufacturing enterprise, GUOCHENG enjoys solid experience and advanced production tools. Located in China's Shandong Province, GUOCHENG has chosen a strategic location that provides the necessary proximity for the development of its operations. It is located close to major highways, just a 2-hour drive from Qingdao. Our engineering department employs specialists in the design and production of metal structures. Our mechanical welding know-how and compliance with industry standards guarantee maximum quality control.

About Beijing Huayu Rongju Technology Co., Ltd.

Shandong Jianlong Plastic Co., Ltd. is a large company with the annual production capacity of 50, 000 tons, and it is the manufacturer with strong financial and technical capabilities, was founded in Ju County, Rizhao City, Shandong Province, China in 1992. The company possesses modern standard workshops and management system, and products are specialized on PVC well drilling pipe, Water Pipe, UPVC, CPVC, HDPE, PPR, PE-RT, PEX, MPVC pipes and fittings area, which with many authorized certificates and honors, such as quality and environment system certificates, health and safety management system certificates and other honors from National and Provincial Government departments!

Established in 2008, Shijiazhuang Shentong Plastic Industry Co., Ltd. is a professional manufacturer and exporter

GUANGZHOU OCTOVENT COOLING EQUIPMENT Co., Ltd

Kebing is a professional and experienced hose and pipeline manufacturer and trading company in China. We are located in Shijiazhuang City, Hebei Province. Because of excellent quality, reasonable price and good after -sales service. Our products enjoy great reputation in automobiles, air -conditioning, ships, agriculture, construction, fire protection in the United States, Europe, and Southeast Asia. Kebing focuses on a new type of high -tech, polymer composite material plastic products manufacturer that integrates production, sales and scientific research. The resin hoses produced by our company include pneumatic hose, high pressure hose, air hose-fluid hose, garden hose, fire hoses, steel wire hoses, plastic hoses, vacuum pipes, ventilation pipes, etc. Variety; We adhere to the management principles of "quality first, service first, continuous improvement, innovation to satisfy customers", and take "zero defects and zero complaints" as the quality goal.

Kangtai Plastic Technology Co., Ltd.

1. Our History.

Located in Haining, Jiaxing City, Zhejiang Province, we are a professional manufacturer and exporter specializing in fullrange HVAC ventilation system products. Our factory integrates product researchanddevelopment, sheetmetal processing, production and global export sales, providing onestop ventilation solutions for worldwide engineering customers.

Founded in 2002, Linyi Rongxiang Steel Pipe Co., Ltd. is a professional steel pipe manufacturer located in Hedong Industrial Park, Linyi, China. With over 20 years of manufacturing experience, we specialize in R&D, production and deep processing of welded pipes, cold-rolled strip steel and hot-DIP galvanized steel pipes. As a Provincial Innovative SME and Green Factory with 26 technical patents, we own a complete industrial chain covering raw material processing, precision pipe welding, environmental galvanizing, customized deep processing and integrated logistics services. Our factory covers 200, 000 square meters with advanced intelligent production lines and professional testing laboratories, supporting an annual output of 50, 000 tons. We produce round pipes (15mm-219mm outer diameter) and full-spec square and rectangular tubes, with wall thickness tolerance strictly controlled within ±0.2mm for standard products and ±0.1mm for high-precision customized pipes. Our in-house galvanizing workshop provides adjustable anti-corrosion solutions, with standard zinc coating of 40μm to 85μm and thickened coating over 100μm for coastal, chemical and high-corrosion environments. Adopting eco-friendly passivation technology, our products meet domestic and international environmental standards for smooth export customs clearance. We offer one-stop deep processing including fixed-length cutting from 3m to 12m, bending, punching, polishing and anti-rust treatment, allowing direct installation without secondary processing. We maintain sufficient spot inventory for greenhouse, structural, guardrail, power support and storage rack pipes, with fast delivery: 3-5 days for stock orders, 7-15 days for customized orders and 15-25 days for bulk orders. Our product lineup covers Q235B/Q355B black welded pipes, cold galvanized pipes and high-performance hot-DIP galvanized pipes. Our galvanized pipes feature strong zinc adhesion and over 10 years of outdoor anti-corrosion lifespan, widely used in greenhouses, municipal facilities and industrial projects. We support SGS third-party inspection and provide complete qualification documents, complying with GB/T3091, ASTM and EN standards for global bidding and customs clearance. With strict three-level quality control and independent R&D capabilities, we ensure stable product quality and standardized green production. We support flexible cooperation with low 1-ton MOQ, free samples, tiered pricing, T/T and L/C payment terms, as well as EXW and FOB quotations. Adhering to "Quality First, Customer Supreme, Credit-Based", we provide efficient after-sales service and sincerely cooperate with global clients for win-win development.

Hebei Yingnai Environmental Protection Technology Co., Ltd.

Hebei Derunze Chemical Equipment Co., Ltd is a high tech enterprises that collection of sale for project consulting, designed and developed, engineering design, materials purchaseing, transport of goods, equipmeny installation and debugging, also we had pass the ISO 9001: 2015, ISO14001: 2015 and GB/T45001-2020/ISO45001: 2018 international quality mamagement system certification.

Founded in 1997, Jwell has grown from a pioneering workshop into a global titan in the plastic extrusion industry. Headquartered in the Jiading District of Shanghai, the company has spent nearly three decades embodying its core entrepreneurial spirit: Hard work, Persistence, and Innovation.

ZHENJIANG AGS MACHINERY Co., Ltd is a professional manufacturer and engineering service provider specializing in bulk material handling equipment and grain processing machinery. Our product line covers a wide range of machines and components, including screw conveyors, chain conveyors, belt conveyors, bucket elevators, roller mills, purifiers, bin filters, spout pipes, sieve cleaners, chains, and many other parts required for flour mills, feed mills, rice mills, and related industries.

**Hebei Shuzhi Rubber Products Co., Ltd. - Precision Engineered Sealing & Fluid Transfer Solutions**

Foshan NuoEnWei Ventilation Co., Ltd. Was established in 2007 as a professional enterprise specializing in the research and development, manufacturing, global sales, and after-sales service of ventilation ducts with portable fans. With over ten years of experience, our factory boasts a highly skilled technical team and advanced production equipment and technology. We adhere to the business philosophy of quality survival, quality development, and efficiency. As a result, we have established long-term stable cooperative relationships with many enterprises both domestically and internationally who recognize and praise our products.

Jinan Hongtu Forging Co., Ltd. is situated in Puji Town, Zhangqiu City, Shandong Province-a region renowned as China's "Hometown of Blacksmiths. " Established in 2004, the company occupies a sprawling facility spanning over 30, 000 square meters. With a workforce of 160 employees, including 12 skilled technicians, we achieve an annual production capacity of 20, 000 metric tons of forged components, generating annual revenues exceeding 100 million RMB. Our vertically integrated operations encompass two forging plants and one precision machining facility, supported by cutting-edge infrastructure.