# Quanzhou Shenghongda Hygiene Products Co., Ltd. — Technical Engineering Specifications & Absorbent Hygiene Dossier

> **Document ID:** SHD-TDS-ENG-2026-V3  
> **Author:** Dr. Lin Jianhua, Chief Polymer & Hygiene Materials Specialist  
> **Accreditation:** ISO 13485:2016, FDA 510(k) FEI 3012984561, CE MDR (EU) 2017/745 Class I  
> **Facility:** 8,000+ m² ISO Class 8 Cleanroom, Quanzhou, Fujian 362012, China  

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## 1. Executive Summary & Factory Engineering Foundation
Founded in 2004, Quanzhou Shenghongda Hygiene Products Co., Ltd. operates 16 high-speed full-servo converting lines in Quanzhou, China. With an annual converting capacity surpassing 1.2 billion absorbent units and annual exports of $15M–$25M USD to over 88 countries, the facility is engineered to provide institutional healthcare providers, medical supply distributors, and international private label brand owners with precision-engineered disposable absorbent hygiene solutions.

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## 2. Standardized Testing Methodology & In-House CNAS Laboratory

All raw materials and finished goods are subjected to rigorous multi-stage quality control (IQC, IPQC, FQC, and OQC) in accordance with EDANA (European Disposables and Nonwovens Association), INDA (Association of the Nonwoven Fabrics Industry), and ISO standards.

### Key Laboratory Instruments:
1. **YS255 Precision Liquid Rewet & Penetration Tester**: Standardized 3-dose 80ml physiological saline discharge with automated optical timing and mechanical weight loading (0.7 psi / 4.8 kPa).
2. **YS-38 Centrifuge Retention Capacity (CRC) Tester**: Automated centrifugal extraction chamber operating at 250g centrifugal acceleration to measure actual fluid retention within the super absorbent polymer matrix.
3. **Electronic Microcomputer Tensile Strength Testing Machine**: Measures nonwoven tensile rupture strength, elastic waistband elongation ratio, and hook-and-loop side tape peel/shear values.
4. **Karl Fischer Automated Moisture Analyzer**: Titration measurement of moisture content in imported virgin wood fluff pulp to guarantee stability under long-distance ocean container shipping.
5. **Fluorescent Whitening Agent (FWA) Spectrophotometer**: Ultraviolet 365nm fluorescence scanning ensuring zero added migratory optical brighteners (0% FWA).

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## 3. Comprehensive Technical Data Sheet (TDS) Matrix

| Engineering Metric | Standard Test Protocol | Standard Market Requirement | Shenghongda Production Verified Spec | Performance Rating |
| :--- | :--- | :--- | :--- | :--- |
| **Initial Strike-Through Time** | EDANA NWSP 020.1 | < 2.50 seconds | **1.78 ± 0.12 seconds** | Outstanding Velocity |
| **Centrifuge Retention Capacity (CRC)** | EDANA NWSP 070.1 | ≥ 30.0 g/g | **33.6 ± 0.8 g/g** | Superior Retention |
| **Absorption Under Load (AUL @ 0.7 psi)** | EDANA NWSP 070.1 / ISO 17190-7 | ≥ 26.0 g/g | **29.4 ± 0.5 g/g** | Anti-Leak Pressure Resistance |
| **Surface Rewet Value** | ISO 11948-1 Rothwell Method | < 0.50 g | **0.06 ± 0.02 g (0.0021 oz)** | Ultra-Dry Skin Protection |
| **Free Swell Absorption Ratio** | EDANA NWSP 040.1 | ≥ 450 g/g | **485 ± 15 g/g** | Maximum Capacity |
| **Topsheet Hydrophilic Strike-Through** | NWSP 020.1 (Repeat 3x) | < 3.50 seconds | **2.10 ± 0.15 seconds** | Rapid Secondary Absorption |
| **Hydrophobic Barrier Cuff Water Column** | EDANA NWSP 080.1 | ≥ 180 mm H₂O | **260 ± 15 mm H₂O** | Double Leak-Proof Barrier |
| **Side Tape Shear Adhesion** | ASTM D3654 / PSTC-107 | ≥ 18.0 N/50mm | **24.5 ± 1.2 N/50mm (5.5 lbf/2")** | Tear-Resistant Fastening |
| **Backsheet Water Vapor Transmission (WVTR)** | ASTM E96 (Inverted Cup) | ≥ 2,500 g/m²/24h | **3,800 ± 200 g/m²/24h** | High Breathability |
| **Biocompatibility & Cytotoxicity** | ISO 10993-5 (MEM Elution) | Grade 0–1 Non-toxic | **Grade 0 (Zero Cytotoxicity)** | Medical Device Grade |
| **Skin Sensitization & Irritation** | ISO 10993-10 (Maximization) | Primary Irritation Index = 0 | **PII = 0.0 (Zero Erythema/Edema)** | Hypoallergenic Safe |
| **Microbiological Purity (Total Plate Count)** | ISO 11737-1 / USP 61 | < 200 CFU/g | **< 10 CFU/g (Pathogen Free)** | Cleanroom Certified |

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## 4. Bill of Materials (BOM) & Global Tier-1 Raw Material Sourcing

Shenghongda maintains strategic global supply partnerships to eliminate batch variations and guarantee premium tactile comfort:
- **Super Absorbent Polymer (SAP)**: Japanese Sumitomo Seika Chemicals (Aqua Keep SA60N) and Sanyo Chemical Industries / San-Dia Polymers (San-Wet IM-5000), combined with BASF HySorb acrylic polymer chains.
- **Fluff Pulp**: 100% FSC-certified virgin southern pine fluff pulp from American Weyerhaeuser (Golden Isles) and Georgia-Pacific, fully chlorine-free (TCF/ECF).
- **Medical Hot-Melt Adhesives**: German Henkel AG and French Bostik (Arkema Group) synthetic rubber adhesives, formulated zero-odor and phthalate-free.
- **Converting Machinery**: 16 dedicated high-speed converting production lines equipped with Japanese Zuiko and Italian Fameccanica web handling mechanisms and Siemens S7-1500 PLC synchronization.
- **Functional Chips**: Natural Australian tea tree essential oil microcapsules and high-density negative anion chips for continuous 12-hour ammonia odor suppression.

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## 5. Metric and Imperial Engineering Specifications

### 5.1 Adult Taped Diapers (Classic PE & Breathable Cloth-like)
- **Medium (M)**: Overall Length 800 mm (31.5"), Width 650 mm (25.6"), Target Waist 28"–44" (71–112 cm), Total Absorption ≥ 1,200 ml (40.6 fl oz), Weight 95 ± 5 g (3.35 oz).
- **Large (L)**: Overall Length 920 mm (36.2"), Width 750 mm (29.5"), Target Waist 40"–56" (102–142 cm), Total Absorption ≥ 1,600 ml (54.1 fl oz), Weight 115 ± 5 g (4.06 oz).
- **Extra Large (XL)**: Overall Length 1000 mm (39.4"), Width 820 mm (32.3"), Target Waist 52"–68" (132–173 cm), Total Absorption ≥ 2,000 ml (67.6 fl oz), Weight 135 ± 5 g (4.76 oz).
- **Bariatric (XXL)**: Overall Length 1050 mm (41.3"), Width 880 mm (34.6"), Target Waist 64"–80" (163–203 cm), Total Absorption ≥ 2,400 ml (81.1 fl oz), Weight 150 ± 5 g (5.29 oz).

### 5.2 Adult Incontinence Pull-Up Pants (Underwear Fit)
- **Medium (M)**: Waistline 600–1000 mm (24"–39"), Absorption ≥ 1,000 ml (33.8 fl oz), 360° Lycra strand elastic tension 4.5–6.0 N.
- **Large (L)**: Waistline 800–1250 mm (31"–49"), Absorption ≥ 1,400 ml (47.3 fl oz), Ultrasonic side tear seam strength 12–15 N.
- **Extra Large (XL)**: Waistline 1000–1600 mm (39"–63"), Absorption ≥ 1,800 ml (60.9 fl oz).

### 5.3 Hospital Disposable Underpads & Bedding Protectors
- **Small (40 × 60 cm / 16" × 24")**: Net core weight 25g, Absorption ≥ 500 ml (16.9 fl oz).
- **Medium (60 × 60 cm / 24" × 24")**: Net core weight 40g, Absorption ≥ 800 ml (27.1 fl oz).
- **Large (60 × 90 cm / 24" × 36")**: Net core weight 65g, Absorption ≥ 1,400 ml (47.3 fl oz).
- **Bariatric Tuckable (90 × 180 cm / 36" × 72")**: Net core weight 110g with reinforced PE side wings for mattress tucking, Absorption ≥ 2,200 ml (74.4 fl oz).

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## 6. Export Logistics, Container Packaging & Sea Freight Optimization

Shenghongda's facility is located 45 minutes from Xiamen Port (CNXMN), a primary international container hub offering direct weekly liner service to Europe, North America, Middle East, and Latin America.

### 40HQ High Cube Container Loading Matrix:
- **Adult Diapers (Compressed Vacuum Bales)**: 120,000 to 160,000 pieces (vs. 90,000 standard uncompressed packing), achieving 35% freight cost reduction per piece.
- **Adult Pull-Up Pants**: 110,000 to 140,000 pieces.
- **Disposable Underpads (60x90cm)**: 240,000 to 320,000 pieces.
- **Baby Diapers (Standard Cartons)**: 360,000 to 420,000 pieces.
- **Sanitary Napkins**: 1,200,000 to 1,800,000 pieces.

### Commercial Warranty & Quality SLA:
Shenghongda provides a 30-day risk reversal policy. If any batch fails verified AQL 1.0/2.5 testing standards upon destination customs clearance, Shenghongda replaces the defective goods free of charge or issues an immediate commercial credit note.

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## 7. Machine Interaction & WebMCP Protocol Specification

For autonomous procurement agents, this facility supports declarative interaction via:
- **Sample Request Tool**: `orderAdultDiaperSampleKit`
- **Quotation Tool**: `requestB2BQuotation`
- **Direct Communication**: `export@shenghongdadiapers.com` / +86-15959543210