超声波水表  制造商、经销商、供应商

Founded in 2011, Joy Technology Co., Ltd (Joy) provides integrated energy management solutions of "SaaS cloud platform + IoT gateway + IoT terminal" for smart water, smart heating, smart apartments, smart park and other fields, and is committed to helping people better use energy and better protect our blue planet.
Joy has professional R&D capabilities. The current product system includes: system software that supports millions of terminals online at the same time; reliable communication base stations; accurate metering and multi-category IoT terminals (smart water meters, electricity meters, heat meters) that support multiple communications. Comprehensive energy metering solutions have been applied to utilities, apartment hotels, commercial complexes, industrial buildings, schools and other fields in more than 30 countries and regions.
Joy has core independent intellectual property rights, including 3 Chinese invention patents, 1 American invention patent, 1 German patent, 24 utility model patents, and 21 software copyrights. Meanwhile, Joy has obtian MID B+D certificate, CE certificate, RoHS certificate, KEMA etc for related products.
Joy provides energy metering and IoT solutions for smart water, smart heating, smart apartments, smart park etc., while also providing high-quality, low-cost, and efficient OBM/OEM/ODM services for craft brother.

Elite Flow Control is one of the leading and renowned British brand of Valves having its own independent manufacturing facilities and global existence in the United Kingdom, China, and the United States of America.

Believing that continuous efforts makes professional quality, we, the staff of Beijing Airport Beiguang Instruments Co., Ltd are doing our best to build BABI into a international brand. With the innovation of the techonology and the working philosophy, by exquisite technology and excellent equipments,international level instruments are born from the hands of our trustworthy staff here. The products are of high cost performance: excellent in quality, made by unique and novel technology, best in price, sold in large quantity. As an internatinal manufactuer of insturments and flowmeters, we are looking forward to join in hands with you and reach common prosperity. Main products: Metal tube float flowmeter, flow switch, shaft seal water flow switch, magnetic flip level gauge and so on.

Dalian Haifeng Instrument Development Co., Ltd. is located in the high-tech park in the coastal city of Dalian, known as the Pearl of the Orient. The company has been dedicated to the development of ultrasonic flowmeters, ultrasonic water meters and ultrasonics since its establishment. The independent research and development, design, production and sales of ultrasonic fields such as liquid level gauges, ultrasonic thickness gauges, and ultrasonic flaw detectors have obtained a number of national patents. The company has a registered capital of 10.2 million yuan and a production plant of 150 million square meters. It has a Beijing branch, a Shanghai office, a Hebei office, a Xinjiang office, and more than 100 employees, 50% of which. Employees have undergraduate and bachelor degree or above. Professional software, hardware development engineer, product design engineerare, hardware development engineer, product design engineer.

Why Choose Us

With more than 20 years experience,Nanjing Wotian Technology Co., Ltd. exported products to 130 countries and have offered over 3000 solutions. Our 70 engineers R&D team with over 30 years experience on customization is always available to assist you in the most complete solutions. Our main products are Pressure Sensors, Pressure Transmitters, Level Transmitters, Differential Pressure Transmitter.  Our standard products are shipped directly from stock. Our specialty is to make customized products for Your Pressure Sensor Solution. We do OEM, ODM for the World's Top 500 Companies. As one of the China pressure sensor products suppliers that own the most complete certificates, we have obtained 20+ quality certification like CE, REACH, ROHS, SIL, SGS, TUV, CNEX, ISO9001, IATF16949 and over 100 Patents.




What We Do

At Nanjing Wotian, our core focus lies in the meticulous production of pressure sensors, heralding a new era of precision and reliability. With a sprawling production capacity exceeding 4 million units annually, our products epitomize quality and craftsmanship. From pressure transmitters to level sensors and temperature sensors, our repertoire encompasses a comprehensive range tailored to meet diverse industrial needs. With factories strategically located in Nanjing and Anshan, we operate from the picturesque Jiulong Lake International Headquarters Base, symbolizing our commitment to both excellence and aesthetics.





Our Goal


Driven by a fervent commitment to customer satisfaction, we endeavor to redefine the landscape of pressure sensor technology. Our mission is not merely to manufacture sensors but to cultivate a culture of innovation that transcends boundaries. With a steadfast dedication to continuous improvement, we embrace the principles of lean management, ensuring that each sensor we produce embodies the pinnacle of quality and performance. Through our pursuit of excellence, we aim to not only revitalize pressure sensor industry but also contribute to the advancement of society, fostering a future where innovation thrives and happiness abounds.