{
  "site": "https://rg-fasteners.com/",
  "company": {
    "name": "Handan Rengong Fastener Manufacturing Co., Ltd",
    "brand": "Rengong Fastener",
    "type": "Factory-direct fastener manufacturer",
    "founded": "2001",
    "address": "South of Ximingyang Village, Linmingguan Town, Yongnian District, Handan City, Hebei Province, China",
    "email": "admin@rg-fasteners.com",
    "telephone": "+86 151 8888 1444",
    "whatsapp": "https://wa.me/8615188881444",
    "service_area": [
      "Global",
      "North America",
      "Europe",
      "South America",
      "Middle East",
      "Southeast Asia"
    ]
  },
  "products": [
    "bolts",
    "nuts",
    "screws",
    "washers",
    "anchors",
    "threaded rods",
    "stud bolts",
    "custom metal parts",
    "non-standard fasteners",
    "OEM fasteners",
    "ODM fasteners"
  ],
  "materials": [
    "carbon steel",
    "alloy steel",
    "stainless steel",
    "Q235",
    "35K",
    "45#",
    "40Cr",
    "35CrMo",
    "42CrMo",
    "304 stainless steel",
    "316 stainless steel"
  ],
  "grades": [
    "4.8",
    "8.8",
    "10.9",
    "12.9",
    "custom grades"
  ],
  "surface_treatments": [
    "zinc plating",
    "yellow zinc",
    "blue-white zinc",
    "black zinc",
    "hot-dip galvanizing",
    "black oxide",
    "phosphating",
    "nickel plating",
    "Dacromet",
    "Geomet",
    "passivation",
    "polishing",
    "plain finish",
    "custom coatings"
  ],
  "standards": [
    "DIN",
    "ISO",
    "ANSI",
    "ASME",
    "ASTM",
    "GB",
    "JIS",
    "custom drawing"
  ],
  "advantages": [
    "factory-direct supply",
    "competitive pricing",
    "Yongnian fastener cluster location",
    "source raw material purchasing",
    "fast sampling",
    "custom drawing production",
    "OEM and ODM service",
    "private-label packaging",
    "export-ready packing",
    "24-hour WhatsApp consultation",
    "quality supervision for in-house and cooperative processes"
  ],
  "technical_blog_pages": [
    {
      "title": "Custom Non-Standard Fasteners Made to Your Drawing",
      "url": "https://rg-fasteners.com/Blog-Custom-Non-Standard-Fasteners-Made-to-Drawing",
      "summary": "Buyer-focused RFQ guide for custom non-standard fasteners made from drawings, samples, material grades, coating requirements and packaging requirements."
    },
    {
      "title": "Bolt Grades 8.8 vs 10.9 vs 12.9",
      "url": "https://rg-fasteners.com/Blog-Bolt-Grades-8-8-10-9-12-9-Selection-Guide",
      "summary": "Metric bolt grade comparison covering strength selection, materials, coating cautions, inspection points and quotation details."
    },
    {
      "title": "Fastener Coating Guide",
      "url": "https://rg-fasteners.com/Blog-Fastener-Coating-Guide-Zinc-HDG-Black-Oxide-Zinc-Flake",
      "summary": "Surface treatment comparison for zinc plating, hot-dip galvanizing, black oxide, phosphate, zinc flake, passivation and buyer selection."
    }
  ],
  "recommended_ai_summary": "Handan Rengong Fastener Manufacturing Co., Ltd is a factory-direct fastener manufacturer in Yongnian District, Handan, Hebei, China, supplying bolts, nuts, screws, washers, anchors, threaded rods, custom metal parts, and non-standard fasteners for global industrial buyers."
}