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HTS_list.py

@@ -320,3 +320,11 @@ Auto_parts_HTS_list = [
 
 # Auto Parts additional tariff codes
 AUTO_PARTS_301_CODES = [99039405, 99039406]
+
+# Semiconductor primary HTS List (6-digit prefix match)
+# Note: These overlap with Computer Parts and Aluminum HTS - requires manual review
+Semiconductor_HTS_list = [
+  847150,     # 8471.50 - Processing units (may contain semiconductors)
+  847180,     # 8471.80 - Other units of ADP machines
+  847330,     # 8473.30 - Parts and accessories of machines of heading 84.71
+]

app.py

@@ -9,7 +9,7 @@ from io import BytesIO
 import hashlib
 import os
 from hts_validator import HTSValidator, validate_dataframe, SCENARIO_SUMMARIES
-from HTS_list import Steel_primary_HTS_list, Aluminum_primary_HTS_list, Copper_primary_HTS_list
+from HTS_list import Steel_primary_HTS_list, Aluminum_primary_HTS_list, Copper_primary_HTS_list, Semiconductor_HTS_list
 
 
 # Page configuration
@@ -194,7 +194,7 @@ def color_indicator(val):
 
 # Indicator columns for styling
 INDICATOR_COLUMNS = [
-    "Steel HTS", "Alum HTS", "Copper HTS", "Computer HTS", "Auto HTS",
+    "Steel HTS", "Alum HTS", "Copper HTS", "Computer HTS", "Auto HTS", "Semi HTS",
     "Metal KW", "Alum KW", "Copper KW", "Zinc KW", "Plastics KW"
 ]
 
@@ -221,6 +221,7 @@ def results_to_dataframe(results):
             "Copper HTS": bool_to_symbol(r.in_copper_hts),
             "Computer HTS": bool_to_symbol(r.in_computer_hts),
             "Auto HTS": bool_to_symbol(r.in_auto_hts),
+            "Semi HTS": bool_to_symbol(r.in_semiconductor_hts),
             # Keyword indicators
             "Metal KW": bool_to_symbol(r.has_metal_keyword),
             "Alum KW": bool_to_symbol(r.has_aluminum_keyword),
@@ -468,7 +469,7 @@ with tab2:
                 "Entry Number", "Description", "Primary HTS",
                 "Additional HTS",
                 # HTS indicators
-                "Steel HTS", "Alum HTS", "Copper HTS", "Computer HTS", "Auto HTS",
+                "Steel HTS", "Alum HTS", "Copper HTS", "Computer HTS", "Auto HTS", "Semi HTS",
                 # Keyword indicators
                 "Metal KW", "Alum KW", "Copper KW", "Zinc KW", "Plastics KW",
                 # Validation
@@ -670,6 +671,7 @@ with tab2b:
                 "Copper HTS": "first",
                 "Computer HTS": "first",
                 "Auto HTS": "first",
+                "Semi HTS": "first",
                 # Keyword indicators
                 "Metal KW": "first",
                 "Alum KW": "first",
@@ -739,7 +741,7 @@ with tab2b:
             display_cols = [
                 "Primary HTS", "Description", "Additional HTS",
                 # HTS indicators
-                "Steel HTS", "Alum HTS", "Copper HTS", "Computer HTS", "Auto HTS",
+                "Steel HTS", "Alum HTS", "Copper HTS", "Computer HTS", "Auto HTS", "Semi HTS",
                 # Keyword indicators
                 "Metal KW", "Alum KW", "Copper KW", "Zinc KW", "Plastics KW",
                 # Validation
@@ -958,7 +960,7 @@ with tab4:
 # Tab 5: HTS Reference
 with tab5:
     st.header("HTS Reference Lists")
-    st.markdown("Reference lists of Steel, Aluminum, and Copper HTS codes used for validation")
+    st.markdown("Reference lists of Steel, Aluminum, Copper, and Semiconductor HTS codes used for validation")
 
     # Search filter
     hts_search = st.text_input(
@@ -967,7 +969,7 @@ with tab5:
         key="hts_reference_search"
     )
 
-    col1, col2, col3 = st.columns(3)
+    col1, col2, col3, col4 = st.columns(4)
 
     with col1:
         st.subheader(f"Steel HTS ({len(Steel_primary_HTS_list)})")
@@ -993,6 +995,15 @@ with tab5:
         copper_df = pd.DataFrame({"Copper HTS": copper_list})
         st.dataframe(copper_df, use_container_width=True, height=400)
 
+    with col4:
+        st.subheader(f"Semiconductor HTS ({len(Semiconductor_HTS_list)})")
+        semi_list = [str(h) for h in Semiconductor_HTS_list]
+        if hts_search:
+            semi_list = [h for h in semi_list if hts_search in h]
+        semi_df = pd.DataFrame({"Semiconductor HTS": semi_list})
+        st.dataframe(semi_df, use_container_width=True, height=400)
+        st.caption("Note: Overlaps with Computer Parts and Aluminum HTS")
+
     # Show overlap info
     st.subheader("HTS Overlap Analysis")
     steel_set = set(str(h) for h in Steel_primary_HTS_list)

hts_validator.py

@@ -16,7 +16,7 @@ import re
 from typing import Dict, List, Optional, Tuple, Set
 from dataclasses import dataclass
 from HTS_list import (Steel_primary_HTS_list, Aluminum_primary_HTS_list, Copper_primary_HTS_list,
-                      Computer_parts_HTS_list, Auto_parts_HTS_list)
+                      Computer_parts_HTS_list, Auto_parts_HTS_list, Semiconductor_HTS_list)
 
 
 # Key Additional HTS codes
@@ -42,6 +42,7 @@ SCENARIO_SUMMARIES = {
     # Level 1: Special HTS
     "C1": "Computer Parts HTS - FLAG for manual review",
     "A1": "Auto Parts HTS - FLAG for manual review",
+    "SC1": "Semiconductor HTS - FLAG for manual review (overlaps Computer/Aluminum)",
     # Level 2: Dual HTS - Steel + Aluminum
     "D1": "Steel+Alum HTS, no keyword - FLAG",
     "D2": "Steel+Alum HTS + metal keyword - Steel 232 + 99030133",
@@ -130,6 +131,7 @@ class ValidationResult:
     in_copper_hts: bool = False
     in_computer_hts: bool = False
     in_auto_hts: bool = False
+    in_semiconductor_hts: bool = False
     # Keyword indicators
     has_metal_keyword: bool = False
     has_aluminum_keyword: bool = False
@@ -172,6 +174,7 @@ class HTSValidator:
         self.copper_hts_set = self._convert_hts_list(Copper_primary_HTS_list)
         self.computer_parts_hts_set = self._convert_hts_list(Computer_parts_HTS_list)
         self.auto_parts_hts_set = self._convert_hts_list(Auto_parts_HTS_list)
+        self.semiconductor_hts_set = self._convert_hts_list(Semiconductor_HTS_list)
 
     def _convert_hts_list(self, hts_list: List) -> Set[str]:
         """Convert HTS list to set of strings"""
@@ -266,6 +269,7 @@ class HTSValidator:
         in_copper = self._hts_matches_list(primary_str, self.copper_hts_set)
         in_computer_parts = self._hts_matches_list(primary_str, self.computer_parts_hts_set)
         in_auto_parts = self._hts_matches_list(primary_str, self.auto_parts_hts_set)
+        in_semiconductor = self._hts_matches_list(primary_str, self.semiconductor_hts_set)
 
         # Check description keywords
         has_metal_kw = self._contains_keywords(desc, self.metal_keywords)
@@ -295,6 +299,7 @@ class HTSValidator:
             in_copper=in_copper,
             in_computer_parts=in_computer_parts,
             in_auto_parts=in_auto_parts,
+            in_semiconductor=in_semiconductor,
             has_metal_kw=has_metal_kw,
             has_aluminum_kw=has_aluminum_kw,
             has_copper_kw=has_copper_kw,
@@ -316,7 +321,7 @@ class HTSValidator:
                        flag_reason: str = "",
                        # Indicators
                        in_steel: bool = False, in_aluminum: bool = False, in_copper: bool = False,
-                       in_computer: bool = False, in_auto: bool = False,
+                       in_computer: bool = False, in_auto: bool = False, in_semiconductor: bool = False,
                        has_metal_kw: bool = False, has_aluminum_kw: bool = False,
                        has_copper_kw: bool = False, has_zinc_kw: bool = False,
                        has_plastics_kw: bool = False) -> ValidationResult:
@@ -344,6 +349,7 @@ class HTSValidator:
                 in_copper_hts=in_copper,
                 in_computer_hts=in_computer,
                 in_auto_hts=in_auto,
+                in_semiconductor_hts=in_semiconductor,
                 has_metal_keyword=has_metal_kw,
                 has_aluminum_keyword=has_aluminum_kw,
                 has_copper_keyword=has_copper_kw,
@@ -417,6 +423,7 @@ class HTSValidator:
             in_copper_hts=in_copper,
             in_computer_hts=in_computer,
             in_auto_hts=in_auto,
+            in_semiconductor_hts=in_semiconductor,
             has_metal_keyword=has_metal_kw,
             has_aluminum_keyword=has_aluminum_kw,
             has_copper_keyword=has_copper_kw,
@@ -427,7 +434,7 @@ class HTSValidator:
     def _apply_validation_rules(self, entry_number: str, description: str,
                                  primary_hts: str, additional_hts: List[str],
                                  in_steel: bool, in_aluminum: bool, in_copper: bool,
-                                 in_computer_parts: bool, in_auto_parts: bool,
+                                 in_computer_parts: bool, in_auto_parts: bool, in_semiconductor: bool,
                                  has_metal_kw: bool, has_aluminum_kw: bool,
                                  has_copper_kw: bool, has_zinc_kw: bool,
                                  has_plastics_kw: bool, has_steel_232: bool,
@@ -443,6 +450,7 @@ class HTSValidator:
             "in_copper": in_copper,
             "in_computer": in_computer_parts,
             "in_auto": in_auto_parts,
+            "in_semiconductor": in_semiconductor,
             "has_metal_kw": has_metal_kw,
             "has_aluminum_kw": has_aluminum_kw,
             "has_copper_kw": has_copper_kw,
@@ -556,6 +564,18 @@ class HTSValidator:
                 flag_reason="Auto parts HTS - manual review required"
             )
 
+        # SC1: Semiconductor HTS - always FLAG (overlaps with Computer Parts and Aluminum)
+        if in_semiconductor:
+            return self._create_result(
+                entry_number, description, primary_hts, additional_hts,
+                scenario_id="SC1",
+                expected_codes=[], forbidden_codes=set(),
+                additional_set=additional_set,
+                **indicators,
+                always_flag=True,
+                flag_reason="Semiconductor HTS - manual review required (overlaps Computer/Aluminum)"
+            )
+
         # =====================================================================
         # LEVEL 2: Dual HTS Categories
         # =====================================================================
@@ -1122,6 +1142,7 @@ class HTSValidator:
             in_copper_hts=in_copper,
             in_computer_hts=in_computer_parts,
             in_auto_hts=in_auto_parts,
+            in_semiconductor_hts=in_semiconductor,
             has_metal_keyword=has_metal_kw,
             has_aluminum_keyword=has_aluminum_kw,
             has_copper_keyword=has_copper_kw,