With China's aging population accelerating — COPD prevalence among those over 65 exceeding 10%, and over 100 million patients nationwide — demand for home oxygen therapy, chronic care, and high‑altitude travel supplementation is surging. In 2024, China's oxygen concentrator market reached RMB 11.7 billion, growing 20% year‑on‑year. While over 20% of European and American households own portable oxygen devices, China's penetration rate remains below 1%, signaling a massive blue‑ocean opportunity.

Founded on March 24, 2022, in Kunshan Medical Device Industrial Park, Suzhou Yangduoduo Medical Technology Co., Ltd. is a fully integrated enterprise covering R&D, algorithm development, production, marketing, and channel operations. Breaking from the industry's prevalent OEM and white‑label assembly model, the company develops all software, electronic hardware, and structural designs in‑house.

Key milestones: YDD medical series立项 in April 2023; mass production and market launch in 2024, topping e‑commerce sales charts during Double 11; ROC wellness series launched in 2025, again securing the No.1 domestic sales position during 618; and the YDDPRO series now in mass production, with product iteration pace leading the industry.

Certifications & IP – The company holds a medical device production license (No. 20240302), ISO 13485 certification, and medical device registration certificates. It owns the software copyright for its portable concentrator control system, with 8 core utility model patents pending, covering molecular sieve quick‑release structures, automated aging testing systems, battery low‑temperature protection, oxygen chambers, flow sensors, circuit protection, and product design — building a comprehensive IP moat.

Precision Manufacturing – The molecular sieve is the "heart" of the concentrator. Yangduoduo operates a fully automatic precision filling line with intelligent weighing and control, achieving gram‑level accuracy with filling error ≤ ±0.1g per tower. Using French‑imported CECA molecular sieves, the YDD medical series delivers a stable 93%±3% oxygen concentration, while all wellness models maintain 90%+ concentration. The proprietary quick‑release molecular sieve design allows users to replace modules by hand, significantly reducing long‑term maintenance costs.

All products undergo mandatory automated aging testing on a patented system, with full‑load aging lasting 4 consecutive hours for all models. During testing, dozens of parameters — oxygen concentration, flow rate, compressor temperature, sensor sensitivity — are monitored in real time, with abnormal units automatically flagged for rework. Environmental simulation chambers replicate extreme conditions (heat, cold, high‑altitude low pressure) to pre‑eliminate adaptability risks. This rigorous system supports YDD's 3‑year compressor warranty and tiered component warranties.

Core Technology – The proprietary pulse‑dose oxygen delivery algorithm, developed through extensive respiratory sampling, dynamically tracks breathing rhythm and ambient pressure changes, solving sensor drift and individual variability to achieve 100% precise on‑demand delivery — boosting oxygen utilization efficiency by over 50% compared to traditional continuous‑flow machines.

Building on this, the AI‑driven high‑altitude adaptive system automatically fine‑tunes parameters every 500 meters of elevation. Field‑tested in Tibet at altitudes including 5,248m, 4,388m, and 3,021m, it delivers stable, high‑concentration oxygen even at the extreme altitude of 6,000 meters — overcoming the long‑standing industry challenge of performance degradation at high elevations.

Product Portfolio – Yangduoduo offers four product families covering medical and wellness applications, with weights ranging from 1.28kg to 2.1kg — breaking free from the bulky 5kg–15kg designs of traditional concentrators.

YDD Medical Series (certified): Flow‑adjustable (1–6 levels), 1.65kg (bare unit), 2.1kg with battery. Dual detachable battery options provide up to 6 hours of low‑flow endurance. Equipped with 20 intelligent fault alerts and WeChat Bluetooth mini‑program for remote data viewing. Ideal for home oxygen therapy for COPD and cardiovascular conditions, primary care facilities, and nursing homes. Compressor: 3‑year warranty; molecular sieve and battery: 1‑year warranty.

ROC & Cloud Premium Wellness Series: As light as 1.28kg, integrating pulse, continuous, oxygen‑enriched, and nebulization modes. Oxygen‑enriched mode delivers 60% medium‑concentration oxygen and supports dual‑user operation. Featuring 12‑layer filtration and AI altitude adaptation, tested at up to 5,500m. Designed for high‑altitude road trips and daily home wellness.

F Series High‑Cost‑Effectiveness Models: 1.28kg, featuring dual Type‑C fast‑charging ports and compatibility with 65W power banks. Includes oxygen‑enriched and nebulization modes. Designed for light‑use scenarios: office overtime, exam preparation, pregnancy supplementation, and camping trips.

Business Model – Yangduoduo operates an omnichannel model combining online retail and offline distribution. Online, it topped domestic portable concentrator sales charts during 2024 Double 11 and 2025 618, building strong user word‑of‑mouth. Offline, it is steadily expanding partnerships with medical institutions, nursing homes, health management companies, and corporate gift channels. Revenue streams extend beyond device sales to include consumable replenishment and technology licensing, capturing greater value across the industry chain.

Future Outlook – Riding on China's aging population, rising health awareness, and expanding high‑altitude tourism, Yangduoduo will continue to excel in precision molecular sieve filling, automated aging testing, and iterative algorithm development. With the YDDPRO now in production and next‑generation W‑series and home ventilator projects in pre‑development, the company is steadily expanding its respiratory health portfolio.

Committed to the vision of becoming China's leading portable oxygen brand, Yangduoduo remains dedicated to independent R&D and precision manufacturing, narrowing the technology gap with global leaders. By delivering high‑quality, cost‑effective products, it aims to drive portable oxygen penetration across Chinese households — bringing affordable oxygen therapy to millions and safeguarding every breath.