{
  "schema_version": 1,
  "id": "pcr.metal-products-machinery-and-equipment.special-purpose-machinery.animal-feed-preparation-machinery",
  "title": {
    "en-US": "Farm-type animal feed preparation machinery manufacture",
    "zh-CN": "农场型动物饲料制备机械制造"
  },
  "status": "candidate",
  "pcr_kind": "product_category_rule",
  "content_maturity": "authored_methodology",
  "version": "0.1.0",
  "domains": [
    "metal-products-machinery-and-equipment"
  ],
  "modules": {
    "core": [
      "pcr-minimum-content",
      "unit-of-analysis",
      "reference-flow",
      "inventory-flow-taxonomy",
      "system-boundary",
      "allocation",
      "data-quality",
      "validation-rules"
    ]
  },
  "target_entities": [
    "flow",
    "process",
    "lifecyclemodel",
    "dataset"
  ],
  "languages": {
    "canonical": "en-US",
    "available": [
      "en-US",
      "zh-CN"
    ]
  },
  "translation_status": {
    "zh-CN": "aligned"
  },
  "classification_refs": [
    {
      "system": "CPC",
      "version": "3.0",
      "code": "44192",
      "title": "Machinery for preparing animal feeding stuffs",
      "mapping_type": "narrower"
    }
  ],
  "review_metadata": {
    "scientific_review": "pending",
    "semantic_boundary_decision": "Farm-type non-self-propelled feed grinding, rolling and mixing machine manufacture; includes declared integral dose/weigh/dust/discharge modules. Non-farm cereal milling is covered by the existing material milling-industry PCR, and feed products by the existing animal-feeding PCR. Transport-only self-loading trailers and industrial steam/pelleting/extrusion lines are excluded; latter require additional methodology evidence. Scope narrower than CPC title. Old scaffold and shared mappings untouched.",
    "unresolved_flow_identities": [
      {
        "row_id": "steel_sheet",
        "selected_flow": "Hot-rolled non-alloy steel sheet",
        "reason": "Direct non-alloy candidate description defines alloy steel; exact grade and hot-rolled sheet state not verified."
      },
      {
        "row_id": "stainless_sheet",
        "selected_flow": "Cold-rolled stainless steel sheet",
        "reason": "Returned stainless records do not verify the required ordinary cold-rolled stock and delivered state."
      },
      {
        "row_id": "solid_wire",
        "selected_flow": "Copper-coated solid carbon-steel welding wire",
        "reason": "Flux-cored or generic wire records do not establish copper-coated solid carbon-steel wire."
      },
      {
        "row_id": "argon",
        "selected_flow": "Argon gas for welding",
        "reason": "Two searches returned unrelated or composition-unspecified candidates; pure argon identity remains unverified, not asserted absent from database."
      },
      {
        "row_id": "caustic",
        "selected_flow": "Sodium hydroxide cleaning reagent, supplied concentration declared",
        "reason": "Pure or specified-concentration candidate does not establish the supplied aqueous cleaner concentration."
      },
      {
        "row_id": "alkaline_effluent",
        "selected_flow": "Spent aqueous alkaline cleaning solution",
        "reason": "No returned identity establishes the segregated aqueous alkaline solution composition and waste-transfer gate."
      },
      {
        "row_id": "gearbox",
        "selected_flow": "Farm feed-mixer mechanical gearbox",
        "reason": "Returned wind-turbine gearboxes do not identify a farm feed-mixer mechanical gearbox."
      },
      {
        "row_id": "hydraulic_cylinder",
        "selected_flow": "Complete hydraulic cylinder",
        "reason": "Machined cylinder parts and kitted components are incomplete; cannot identify a complete sealed cylinder."
      },
      {
        "row_id": "pto_shaft",
        "selected_flow": "Guarded agricultural power-take-off shaft",
        "reason": "No returned identity establishes a complete guarded agricultural PTO shaft and its included joints."
      },
      {
        "row_id": "ball_bearing",
        "selected_flow": "Steel radial ball bearing",
        "reason": "Returned mixed bearings, cages or wind-turbine types do not identify steel radial ball bearings."
      },
      {
        "row_id": "fastener",
        "selected_flow": "Carbon-steel bolt",
        "reason": "Broad steel fastener identity does not establish one bolt grade and coating."
      },
      {
        "row_id": "control_unit",
        "selected_flow": "Farm feed-mixer electronic control unit",
        "reason": "Returned unrelated controllers do not identify a farm feed-mixer electronic unit."
      },
      {
        "row_id": "pack_board",
        "selected_flow": "Corrugated paperboard protective pad",
        "reason": "Box or specified fibre-mixture identities do not establish the protective pad and grade."
      },
      {
        "row_id": "wear_plate",
        "selected_flow": "Wear-resistant steel plate",
        "reason": "Plate candidates do not establish supplier-confirmed wear-resistant alloy and delivered state; manufacturer wear claim does not specify chemistry."
      },
      {
        "row_id": "mixing_auger",
        "selected_flow": "Complete steel feed-mixing auger",
        "reason": "Raw or fabricated steel candidates do not identify one completed feed-mixer auger with declared knife/shaft inclusion."
      },
      {
        "row_id": "hammer",
        "selected_flow": "Hardened steel feed-grinder hammer",
        "reason": "Returned unrelated products do not establish a hardened-steel finished grinder hammer and delivered heat-treatment state."
      },
      {
        "row_id": "mill_screen",
        "selected_flow": "Perforated steel hammermill screen",
        "reason": "Plate or whole-machine candidates do not identify a finished perforated hammermill screen and aperture/state."
      }
    ],
    "unresolved_evidence": [
      "Chemical recipes, net mass, utilities, test media, installed-component BOM and service life must not be inferred from manufacturer examples. Site data required before dataset completeness.",
      "Scientific review and independent translation review remain pending."
    ],
    "identity_rejections": [
      {
        "candidate": "ce3ac926-5d6f-4558-9edc-67179d93dde4",
        "reason": "Non-alloy name but alloy description."
      },
      {
        "candidate": "014f80a3-c257-425b-9b75-3e5a18573695",
        "reason": "Specific conveyor/washing motor context; not evidence for mixer drive."
      },
      {
        "candidate": "a17dfc74-85fa-4cdc-bd1f-61c543d349f2",
        "reason": "Printer incoming subassembly motors/actuators; not stationary farm feed-mixer drive."
      }
    ],
    "inventory_contract": {
      "atomic_flows": "v1",
      "localized_flow_names": "tiangong_zh_v1"
    }
  }
}