building ventilation4,000+ factories verified

Beijing HOLTOP Air Conditioning Co., Ltd. Has been specialized in air-to-air heat recovery and ventilation industry for more than 15 years. We have become one of the most biggest and famous one among China native similar enterprises. Headquarter based in Zhong Guancun North area of SCIENCE PARK, Beijing. The construction area covers 30, 000 m2, including plant area 20, 000 m2 and office building area 10, 000 m2. Yearly production capability reaches 100, 000 heat recovery equipments. HOLTOP independent developed high efficiency heat wheel, air to air plate heat exchanger, heat recovery AHU, HRV, ERV, fan coil etc. Products are trusted by native and overseas customers because of advanced technology, good quality and service. Among these products, HRV/ERV and rotary/plate heat exchanger have been maintaining market share first for many years.

Hangzhou Simon Purification Technology Co., Ltd. Established in 2010 in Hangzhou, China, specializes in enhancing indoor air quality and providing energy-efficient, healthy, and comfortable solutions. Our production facility in Nantong, Jiangsu, is dedicated to designing, researching, developing, producing, and selling our "SIMN" brand products. Our professional team offers a wide range of products, including fresh air dehumidifiers, household and commercial dehumidifiers, industrial and rotary dehumidifiers, temperature and humidity control units, ultrasonic and wet film humidifiers, constant humidity control systems, server room and wine cellar temperature and humidity control systems, fresh air exchangers, silent fans, purification fans, medical digital intelligent fans, ventilation fans, and customized solutions. We cater to residential, commercial, and industrial spaces, such as homes, hotels, hospitals, offices, laboratories, and factories. Our business philosophy revolves around "integrity, cooperation, innovation, and win-win. " With a focus on technology and meticulous attention to detail, we aim to improve indoor air quality, offering tailored solutions to each customer. Committed to renewable energy sources, we continually enhance indoor environments, providing energy-efficient and healthy living spaces. Trusted by a wide customer base, SIMN products uphold comprehensive quality management throughout design, research, development, manufacturing, sales, and after-sales service, ensuring excellence. Opt for Hangzhou Simon Purification Technology Co., Ltd. To craft energy-efficient, healthy, and comfortable indoor environments using cutting-edge technology. We embrace global O E M and O D M collaborations, inviting clients worldwide for consultations, communication, and mutually beneficial, enduring partnerships.

The business scope includes: General projects: Manufacturing of refrigeration and air conditioning equipment; Sales of refrigeration and air conditioning equipment; Fan and fan manufacturing; Sales of fans and blowers; General equipment manufacturing (excluding special equipment manufacturing); Manufacturing of ordinary valves and plugs (excluding special equipment manufacturing); Sales of valves and plugs; Manufacturing of specialized equipment for environmental protection; Sales of specialized equipment for environmental protection; Sales of mechanical equipment; Motor manufacturing; Manufacturing of electric dynamometer motors; Sales of electric dynamometer motors; Sales of distribution switch control equipment; Sales of metal materials; Retail of hardware products; Sales of insulation materials; Manufacturing of insulation and soundproofing materials; Sales of insulation and soundproofing materials; Manufacturing of metal products for safety and firefighting purposes; Sales of electrical equipment; Manufacturing of architectural decoration, plumbing components, and other metal products for building use; Sales of glass fiber reinforced plastic products; Sales of metal products; General equipment repair.

Creating Healthy Indoor Environments Through Intelligent Ventilation Solutions

Company Introduction

TOPRISE has a history of 20 years. We are committed to providing integrated solutions for natural skylights, ventilation, and natural smoke and heat ventilation for buildings worldwide. Our factory, covering 40, 000 square meters, is located in Taicang Port Development Zone, Jiangsu. Recognized as a "High-tech Enterprise of Jiangsu Province, " our Natural Smoke and Heat Exhaust Ventilator has also been awarded the "High-tech Product Certificate. " We are certified with ISO9001 Quality Management System, ISO14001, ISO45001, CE EN12101-2, and CCC certifications by the Ministry of Public Security.  

10+ Years Professional Ventilation Equipment Manufacturer

Zhanghe (Ningbo) Steel Structure Co., Ltd., founded in 1999, is a large-scale professional enterprise focusing on the research and development, design, manufacturing, sales, construction and after-sales of steel structures in China. The annual production capacity of the steel structure of the company reaches 100, 000 tons, and there are 4 steel structure production and manufacturing bases in Wuxiang, Zhejiang, Xiangshan, Zhejiang and Wuhu, Anhui. It has the first grade construction qualification for professional contracting of steel structures and grade II general contracting of construction engineering.

Qingzhou Fan Inlet  Temperature Control Equipment Co., Ltd. Qingzhou Fanleite Temperature Control Equipment Co., Ltd. is a professional manufacturer specialized in temperature control equipment for livestock breeding. The company has an independent large-scale production base and modern workshops, with a complete industrial chain covering R&D, production, sales and service. We are committed to providing stable, efficient and energy-saving temperature control solutions for large-scale breeding farms. Our core products include negative pressure fans, air inlets, cooling equipment, deodorization equipment and other series, which are widely used in various livestock and poultry breeding environments such as chicken houses, pig houses and cattle houses. With mature production technology, strict quality control system and professional technical support, our products perform excellently in ventilation, cooling, air circulation and environmental purification. They can effectively improve the breeding environment, reduce the risk of epidemic diseases and enhance breeding efficiency, winning the trust and recognition of customers at home and abroad.

Shandong Xuguang Tank Air Conditioning Equipment Co., Ltd. Was established in 2008, It is the supplier of the overall product at the end of the central air conditioning system, set composite materials, fresh air equipment, fire smoke exhaust equipment and other products research and development, design, production, sales as one of the modern enterprises. Our products had installed in many countries such as Russian Federation, Southeast Asia, America and so on. The business scope includes central air conditioning system, FCU, AHU, Fresh air ventilation, Water tanks and etc.

Midea Building Technologies(MBT) as a key part of Midea Group, the MBT business division was established in 1999 and was the first to produce VRF in China. Being a global HVAC industry leader and premium supplier of integrated building solutions, MBT has contributed significantly to commercial AC product development. During the developing process, MBT kept growing through internationalization. It set up joint ventures with Siemens, Bosch, and Siix respectively in order to expand in diferent sectors. In 2016, CLIVET was acquired by Midea for further optimizing the global layout.

Hengshi(Langfang) Precision Machinery Manufacturing Co., Ltd was founded in August, 2019, We have a technical team with more than 13-year experience in the production and manufacturing of honeycomb products, it has multiple independently developed honeycomb stamping equipment, honeycomb laser welding equipment and masters advanced high-temperature vacuum brazing technology. Also with a large number of equipments which can meet customers' needs for EMI/RFI/EMC shielding honeycomb. We can support design, production and technical guidance of those metal honeycomb products.

Qingdao HongYu Cles Air Conditioning Co., Ltd. Established in 1999, specializes in the R&D, manufacturing, sales and after services of central air conditioner products.

Anping Puteng Metal Wire Mesh Products Co., Ltd.

D B M(DUMI Building Material/Choimi Metal) is a professional building material supplier which produces and exports aluminium profiles, PVC profiles, hardware products and accessories related to Windows, doors and curtain walls. Products range including casement Windows handles, frictions; Sliding door and window crescent lock, sliding lock, touch locks, sliding rollers, pulley; Shutter frame and accessories, Aluminium and PVC tile trims, PVC corner beads, and aluminium profiles material related products like window frame and LED heat sink etc. D B M also provides customized products and services, as long as it is involved in aluminum and Zinc alloy die casting, aluminium and PVC extrusion processing, stainless steel and aluminum stamping, punching processing of aluminum products, D B M is able to provide support to you. The founder of D B M has 15 years experience of industry production, business development, export and team management that commit to delivering the best quality products for customers. D B M strives to be flexible and becomes your ideal partner.

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.

GUANGZHOU OCTOVENT COOLING EQUIPMENT Co., Ltd

Hebei Innovat Building Materials Group Co., Ltd. is an enterprise specializing in manufacture and sale of high-quality metal products.

Zhejiang Jianben Fan Technology Co., Ltd. is located in Hongguang Village Industrial Zone, Yanjiang Town, Linhai City, Zhejiang Province. As an enterprise focusing on the research and development and manufacturing of various types of fans, we have more than 20 years of industry experience and have been committed to providing high-quality and high-performance fan products. Therefore, we have a good reputation in the global fan industry.

StarDynamic Power Equipment Co., Ltd. is a professional manufacturer specializing in the field of high and low voltage electrical automation. The company focuses on the R&D and manufacturing of high and low voltage power control cabinets, power distribution cabinets, explosion-proof cabinets and ring main units, and provides supporting PLC programming services to create one-stop overall solutions for power distribution and electrical automation for customers. With stable quality and reliable performance, our products have won extensive trust and high recognition from customers at home and abroad.

Mo Ding Building Materials Co., Ltd., founded in 2011, is specializing in building materials, develops and produces high-performance, eco-friendly solutions, including PVC and aluminum drainage systems, wall and ceiling panels, stair handrails, fencing,   decorative accessories, metal roof tiles and other protective/ inslulation wall panels. The company is dedicated to providing durable, reliable, and visually appealing products for residential, commercial, and industrial use worldwide.

Driven by innovation, quality, and passion, Xiamen E-Top Controls Technology Co., Ltd. is a leading Smart WiFi Thermostat manufacturer and HVAC heating & cooling solutions provider. As a professional OEM/ODM Thermostat factory, we fill the market gap with a proven track record of excellence in Smart Home Energy Management. We are committed to delivering high-quality professional technical support, advanced testing equipment, and updated software systems to make ETOP a distinguished partner in the climate control industry.

Today, Haining East Building Materials Co., Ltd becomes a leading manufacturer of research, developing and producing ranges of extrusion PVC panels: PVC ceiling & wall cladding for interior use; PVC vinyl siding, eave panels, weatherboards for exterior use.

Zhemu Factory is established in 1989, covers an area of 12000 square meters plant area and with 8000 square neters manufacturing area.

Shandong Shuidi Shichuan Supply Chain Co., Ltd. Was established on December 8, 2025-. Its legal representative is Wang Ying, with a registered capital of 5 million yuan. The unified social credit code is 91370800MAK3UUN163. The company's registered address is Room 303, Building D2, Industry-University-Research Base, No. 9 Haichuan Road, Liuxing Street, High-tech Zone, Jining City, Shandong Province. The industry it belongs to is business services. Its business scope includes: General items: Supply chain management services; Sales of daily necessities Sales of second-hand daily necessities; Wholesale of clothing and accessories Wholesale of shoes and hats Toy sales Sales of wooden toys Sales of personal hygiene products Wholesale of cosmetics Sales of daily sundries; Internet sales (excluding the sale of goods that require a license); Sales of hygiene products and disposable medical supplies; Sales of special labor protection supplies; Sales of hair accessories Sales of daily necessities; Cosmetics retail Wholesale of kitchenware, sanitary ware and daily sundries; Wholesale of photographic equipment and telescopes; Retail of photographic equipment and telescopes; Sales of optical instruments Sales of cameras and equipment; Sales of optical glass Sales of household appliances Wholesale of sports goods and equipment; Sales of fishing gear Sales of outdoor products Retail of stationery supplies Retail of sports goods and equipment; Sales of office supplies Wholesale of stationery supplies Sales of paper products Paint sales (excluding dangerous chemicals); Sales of office equipment Retail of computer software, hardware and auxiliary equipment; Sales of mechanical equipment; Sales of household appliance spare parts; Retail of household appliances Sales of bicycle spare parts Wholesale of hardware products Sales of building decoration materials; Retail of hardware products Business of wires and cables; Sales of communication equipment; Wholesale of computer software, hardware and auxiliary equipment; Sales of electronic products Sales of chemical products (excluding chemical products subject to licensing) Sales of specialized chemical products (excluding dangerous chemicals); Sales of metal materials Sales of non-metallic minerals and products; Sales of architectural ceramic products; Sales of sanitary ceramic products; Sales of daily-use ceramic products Sales of sanitary ware; Sales of plastic products Sales of enamel products Sales of lightweight building materials Mold sales Sales of building materials Sales of building waterproofing membrane products; Technology import and export Import and export of goods; Technical services, technical development, technical consultation, technical exchange, technical transfer, and technical promotion; Information technology consulting services Information consulting services (excluding information consulting services subject to licensing); Domestic trade agency Import and export agency Sales agent Social surveys (excluding foreign-related surveys); Market research (excluding foreign-related research). (Except for the projects that must be approved by law, business activities can be carried out independently based on the business license in accordance with the law. ) Permitted projects: Second-class value-added telecommunications services; Internet information services. (Business activities subject to approval in accordance with the law may only be carried out after approval by the relevant authorities. The specific business items shall be subject to the approval documents or licenses issued by the relevant authorities. ) The current operating status of the enterprise is in business.

I. Company Profile & History (Rooted in Reality, Rising Anew)

Qingdao Chengmingde Industry and Trade Co., Ltd. is a leading large-scale customized supplier dedicated to high-quality accessories for fresh air and air conditioning systems. With many years of profound experience in export-oriented processing, we have established professional production base spanning over 30, 000 square meters, equipped with more than 150 sets of advanced metal processing equipment and fully automatic spraying lines-ensuring precision, efficiency, and consistency in every production link. Our core product portfolio covers a comprehensive range of ventilation and air conditioning accessories, including grille air vents, diffusers, aluminum alloy louver vents, stainless steel exterior wall exhaust caps, weatherproof exterior wall air vents, high-seal ventilation valves, and floor air vents, all designed to meet the diverse needs of commercial, industrial, and residential projects. We specialize in customized processing and offer flexible OEM/ODM services, tailoring products to clients' specific specifications, dimensions, and performance requirements. Adhering to strict international quality control standards, we conduct rigorous inspections from raw material selection to finished product delivery, guaranteeing durable, reliable, and high-performance accessories. Our efficient production management system and streamlined supply chain enable us to deliver orders in short lead times, even for large-volume or customized projects. We have served clients from over 50 countries and regions worldwide, earning widespread recognition for our product quality, professional service, and competitive pricing. We warmly welcome partners from home and abroad to visit our factory, inspect production processes, and discuss cooperation opportunities, striving to build long-term, mutually beneficial partnerships for a sustainable future.

Zibo HengDing Fan Co., Ltd., located in Nanjiao Town Industrial Park, Zhoucun District, Zibo City, Shandong Province, China, covers an area of 12000 square meters, a building area of 8000 square meters, a total asset of 12 million yuan, 86 employees and 26 engineering and technical persons. The company has passed the ISO9001 quality management system certification and has maintained a long-term technical cooperation relationship with Chinese colleges and universities. Now it has developed into a modern ventilation equipment manufacturing enterprise with first-class testing and production equipment, high-quality and excellent production mold, strong scientific and technological research and development strength, strict quality management system, and gradually improved and developed. Taking market demand as the development direction, the enterprise has always adhered to independent research and development and continuous innovation and has now developed into a modern environmental protection ventilation equipment enterprise focusing on mine fans, centrifugal fans, and special fan series. Fan products have more than 50 series and more than 600 specifications and models, which are widely used in mining, coal mine, oil field, the chemical industry, kilns, metallurgy, boiler, textile, building materials, and other industries. The "Zhifeng" brand products produced by the company sell well in 29 provinces, cities, and autonomous regions of China, and some products are exported to Vietnam, Saudi Arabia, Russia, Iraq, Indonesia, Kazakhstan, Tajikistan, Serbia, Albania, and other countries.

Established in 2005, AirTS is a technology-driven enterprise integrating R&D, manufacturing, sales, and technical services for energy-saving equipment. We specialize in providing comprehensive, turnkey solutions-from system design and implementation to long-term operation and maintenance-for energy-saving projects.

Qingdao Tennry Carbon Co.  , Ltd was established in 2009,  our factory is Located in Qingdao City,  we have been continuously optimizing and innovating around the two core goals of quality and service since establishment,  striving to maintain high quality products, stable delivery time,  professional quality inspection reports and graphite transportation protection measures from trail order to mass production; With 24 hour online service,