{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "Organization",
      "@id": "https://www.shenghongdadiapers.com/#organization",
      "name": "Fujian Shenghongda Hygiene Products Co., Ltd.",
      "alternateName": ["Shenghongda Hygiene", "SHD Diapers", "Quanzhou Shenghongda Hygiene Products Co., Ltd."],
      "url": "https://www.shenghongdadiapers.com",
      "logo": "https://www.shenghongdadiapers.com/images/logo.png",
      "foundingDate": "2004",
      "description": "Benchmark Chinese manufacturer of adult diapers, incontinence pull-up pants, and medical underpads operating 16 high-speed full-servo converting lines in an 8,000+ m² ISO Class 8 cleanroom with ISO 13485, CE MDR, and FDA 510(k) certification.",
      "email": "export@shenghongdadiapers.com",
      "telephone": "+86 15959543210",
      "address": {
        "@type": "PostalAddress",
        "streetAddress": "No. 88 Shenghongda Industrial Park, Luojiang District",
        "addressLocality": "Quanzhou",
        "addressRegion": "Fujian",
        "postalCode": "362012",
        "addressCountry": "CN"
      },
      "geo": {
        "@type": "GeoCoordinates",
        "latitude": 24.9754,
        "longitude": 118.5741
      },
      "sameAs": [
        "https://en.wikipedia.org/wiki/Adult_diaper",
        "https://www.wikidata.org/wiki/Q1056586",
        "https://www.linkedin.com/company/shenghongda-hygiene",
        "https://www.crunchbase.com/organization/shenghongda-hygiene"
      ],
      "knowsAbout": [
        "Adult Incontinence Diapers",
        "Pull-Up Pants Manufacturing",
        "Medical Disposable Underpads",
        "Superabsorbent Polymers (SAP)",
        "ISO 13485 Quality Management",
        "CE MDR Medical Device Compliance",
        "FDA 510(k) Regulations"
      ],
      "founder": {
        "@id": "https://www.shenghongdadiapers.com/#dr-lin-jianhua"
      }
    },
    {
      "@type": "Person",
      "@id": "https://www.shenghongdadiapers.com/#dr-lin-jianhua",
      "name": "Dr. Lin Jianhua",
      "jobTitle": "Chief Technical Director & Senior Hygiene Materials Scientist",
      "worksFor": {
        "@id": "https://www.shenghongdadiapers.com/#organization"
      },
      "description": "Senior Hygiene Materials Scientist with a PhD in Polymer Materials Science and over 25 years of engineering experience in absorbent hygiene technologies. Pioneer of SAP gradient absorption cores and automated inline optical AQL 0.65 inspection systems.",
      "knowsAbout": [
        "Polymer Science",
        "Superabsorbent Polymers (SAP)",
        "Dual-Core Absorption Dynamics",
        "Nonwoven Web Bonding",
        "ISO 11948 Rothwell Method",
        "Medical Cleanroom Engineering"
      ]
    },
    {
      "@type": "TechArticle",
      "@id": "https://www.shenghongdadiapers.com/knowledge-base#whitepaper-sap-gradient",
      "headline": "Engineering Whitepaper: Polymer SAP Gradient Core Absorption Dynamics and AQL 0.65 Quality Control in Disposable Adult Incontinence Diapers",
      "description": "Comprehensive engineering monograph analyzing the physics of liquid acquisition, centrifuge retention capacity (CRC), absorption under pressure (AUP @ 0.7 psi), and rewet minimization under 0.1g in high-volume adult incontinence diapers.",
      "author": {
        "@id": "https://www.shenghongdadiapers.com/#dr-lin-jianhua"
      },
      "publisher": {
        "@id": "https://www.shenghongdadiapers.com/#organization"
      },
      "datePublished": "2024-03-15",
      "dateModified": "2026-09-29",
      "url": "https://www.shenghongdadiapers.com/knowledge-base",
      "inLanguage": "en",
      "about": [
        "Adult Diaper Engineering",
        "EDANA NWSP 020.1",
        "ISO 11948-1 Rothwell Method",
        "AQL 0.65 Quality Gate"
      ]
    },
    {
      "@type": "Product",
      "@id": "https://www.shenghongdadiapers.com/adult-diapers-bulk-supplier#product",
      "name": "SHD Heavy Incontinence Adult Diapers (Series M800 / L1000)",
      "image": "https://www.shenghongdadiapers.com/images/products/adult-diaper-flagship.jpg",
      "description": "Medical-grade adult incontinence diapers featuring Japanese Sumitomo SAP dual-layer composite core, delivering 1,800 to 3,500 ml Rothwell absorption with strike-through under 2.5 seconds and rewet under 0.1g.",
      "brand": {
        "@type": "Brand",
        "name": "Shenghongda Hygiene"
      },
      "manufacturer": {
        "@id": "https://www.shenghongdadiapers.com/#organization"
      },
      "sku": "SHD-AD-ULTRA",
      "mpn": "SHD-AD-M800-L1000",
      "offers": {
        "@type": "AggregateOffer",
        "priceCurrency": "USD",
        "lowPrice": "0.18",
        "highPrice": "0.32",
        "offerCount": "100000",
        "availability": "https://schema.org/InStock",
        "itemCondition": "https://schema.org/NewCondition"
      }
    }
  ]
}