In a market flooded with disposable wellness gadgets, one Chinese manufacturer is making a bold claim: it can produce over five million self-heating products every single day. That scale, backed by 23 patents and a partnership with a traditional Chinese medicine university, positions Hunan Pinliu Biotechnology as a major OEM/ODM player in the global self-care supply chain.
CHANGDE, HUNAN, CHINA, November 7, 2026 /EINPresswire.com/ — Hunan Pinliu Biotechnology Co., Ltd., founded in 2015 and headquartered in Changde, Hunan Province, operates two GMP-standard production bases that together exceed 100,000 m². The company’s daily output of more than 5 million pieces serves over 500 partner brands worldwide, offering one-stop OEM/ODM services that span steam eye masks, warm patches for shoulders, waist, knees, and feet, and other self-heating wellness items.
The company’s technical credentials are noteworthy. It holds 23 patents, including six national invention patents covering heating formulations and product structures. An industry-university-research partnership with Hunan University of Chinese Medicine feeds herbal formulations into commercial products. Additionally, Pinliu was one of the core drafters of China’s one-time steam eye mask industry standard, FZ/T 08007-2024, developed in collaboration with the Shanghai Institute of Quality Inspection and Technical Research.
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Quality certifications cover the full export route: ISO 9001 for quality management, ISO 13485 for medical devices, FDA facility registration for the US market, and BSCI for social compliance. The company’s medical steam eye masks additionally hold NMPA medical device registration in China.
The steam eye mask is Pinliu’s flagship and most diversified category. The range covers regular flat masks, children’s sizes, visible-window versions, dual-pouch variants, fragrance editions, hyaluronic acid types, graphene types, round-core designs, and burst-bead designs. Each shares the same controlled self-heating technology: an iron-oxidation matrix of high-purity iron powder, activated carbon, vermiculite, and sodium chloride that releases steady moist warmth without electricity. Standard performance across the range includes at least 20 minutes of warmth above 40°C, an average temperature of 41±5°C, and a maximum of 45±5°C, verified against the FZ/T 08007-2024 industry standard.
The most distinctive model in the lineup is the C-shaped steam eye mask. Its heating element is shaped like the letter C, concentrating warmth on the eye muscles and acupoints around the orbit while the eyeball itself stays uncovered and unheated, avoiding direct heat over the cornea and pressure on the globe. Following the anatomy of periorbital muscles and classical Chinese-medicine acupoints, the design is considered notably suitable for teenagers as well as adults. Specifications include a 190 × 80 mm size, ≥20 minutes heating above 40°C, average 41±5°C, maximum 45±5°C. The four-layer structure uses printed non-woven fabric, the C-shaped heating pack, a skin-friendly inner layer, and mild-rebound elastic ear loops.
Beyond eye care, Pinliu’s catalog covers the body from head to toe with nine product categories. For buyers, this means one factory, one quality system, and one supply chain can serve an entire warming-wellness product line. Product categories include steam eye masks, eye patches, eye wash solutions, warm patches for head and neck, warm pads for the torso, knee and ankle patches, hand warmers, moxibustion patches, cold compress patches, foot patches, foot soak solutions, mite repellent pouches, and cleaning solutions. Many products share the same iron-oxidation heating platform, which is why cross-category OEM orders are common: a brand that sources steam eye masks frequently extends into neck warmers, knee patches, and foot patches on the same production system, with consistent quality documentation.
Pinliu’s one-stop OEM/ODM service follows four steps: requirement and proposal, samples and specification, specification lock and compliance, and mass production and delivery. Customization options include heating duration and peak temperature, fragrance and active formulations, fabric colors and printing, product sizes, and retail-ready packaging.
Founded in 2015, Hunan Pinliu Biotechnology Co., Ltd. is a national high-tech enterprise with two GMP-standard production bases in Changde (Hunan) and Guangzhou exceeding 100,000 m² in total. The company holds 23 patents including 6 national invention patents, partners with Hunan University of Chinese Medicine, is certified to ISO 9001, ISO 13485, FDA facility registration and BSCI, and serves 500+ partner brands across Asia, Europe, the Middle East and the Americas.
Hunan Pinliu Biotechnology Co., Ltd.
Hunan Pinliu Biotechnology Co., Ltd.
Why it matters: As consumers increasingly seek convenient, drug-free pain relief and relaxation, manufacturers like Pinliu are scaling up to meet global demand with standardized, certified production. The company’s integration of traditional Chinese medicine formulations with modern manufacturing and export compliance illustrates how niche wellness factories are becoming essential links in the global self-care supply chain.
