diff --git a/precheck/tech_data.py b/precheck/tech_data.py
index 820bbe6..6181117 100644
--- a/precheck/tech_data.py
+++ b/precheck/tech_data.py
@@ -65,38 +65,18 @@ valid_layers_ihp_sg13g2 = [
     "Activ.drawing",
     "Activ.label",
     "Activ.pin",
-    "Activ.net",
-    "Activ.boundary",
-    "Activ.lvs",
-    "Activ.mask",
-    "Activ.nofill",
-    "Activ.OPC",
-    "Activ.iOPC",
-    "Activ.noqrc",
     "GatPoly.drawing",
     "GatPoly.label",
     "GatPoly.pin",
-    "GatPoly.net",
-    "GatPoly.boundary",
-    "GatPoly.nofill",
-    "GatPoly.OPC",
-    "GatPoly.iOPC",
-    "GatPoly.noqrc",
     "PolyRes.drawing",
     "PolyRes.label",
     "PolyRes.pin",
-    "PolyRes.net",
-    "PolyRes.boundary",
     "NWell.drawing",
     "NWell.label",
     "NWell.pin",
-    "NWell.net",
-    "NWell.boundary",
     "nBuLay.drawing",
     "nBuLay.label",
     "nBuLay.pin",
-    "nBuLay.net",
-    "nBuLay.boundary",
     "nBuLay.block",
     "PWell.block",
     "pSD.drawing",
@@ -105,160 +85,57 @@ valid_layers_ihp_sg13g2 = [
     "SalBlock.drawing",
     "ThickGateOx.drawing",
     "Cont.drawing",
-    "Cont.net",
-    "Cont.boundary",
-    "Cont.OPC",
     "Metal1.drawing",
     "Metal1.label",
     "Metal1.pin",
-    "Metal1.net",
-    "Metal1.boundary",
-    "Metal1.mask",
-    "Metal1.nofill",
-    "Metal1.slit",
     "Metal1.text",
-    "Metal1.OPC",
-    "Metal1.noqrc",
     "Metal1.res",
-    "Metal1.iprobe",
-    "Metal1.diffprb",
     "Via1.drawing",
-    "Via1.net",
-    "Via1.boundary",
     "Metal2.drawing",
     "Metal2.label",
     "Metal2.pin",
-    "Metal2.net",
-    "Metal2.boundary",
-    "Metal2.mask",
-    "Metal2.nofill",
-    "Metal2.slit",
     "Metal2.text",
-    "Metal2.OPC",
-    "Metal2.noqrc",
     "Metal2.res",
-    "Metal2.iprobe",
-    "Metal2.diffprb",
     "Via2.drawing",
     "Via2.net",
     "Via2.boundary",
     "Metal3.drawing",
     "Metal3.label",
     "Metal3.pin",
-    "Metal3.net",
-    "Metal3.boundary",
-    "Metal3.mask",
-    "Metal3.nofill",
-    "Metal3.slit",
     "Metal3.text",
-    "Metal3.OPC",
-    "Metal3.noqrc",
     "Metal3.res",
-    "Metal3.iprobe",
-    "Metal3.diffprb",
     "MIM.drawing",
-    "MIM.net",
-    "MIM.boundary",
     "Vmim.drawing",
     "Via3.drawing",
-    "Via3.net",
-    "Via3.boundary",
     "Metal4.drawing",
     "Metal4.label",
     "Metal4.pin",
-    "Metal4.net",
-    "Metal4.boundary",
-    "Metal4.mask",
-    "Metal4.nofill",
-    "Metal4.slit",
     "Metal4.text",
-    "Metal4.OPC",
-    "Metal4.noqrc",
     "Metal4.res",
-    "Metal4.iprobe",
-    "Metal4.diffprb",
     "Via4.drawing",
-    "Via4.net",
-    "Via4.boundary",
     "Metal5.drawing",
     "Metal5.label",
     "Metal5.pin",
-    "Metal5.net",
-    "Metal5.boundary",
-    "Metal5.mask",
-    "Metal5.nofill",
-    "Metal5.slit",
     "Metal5.text",
-    "Metal5.OPC",
-    "Metal5.noqrc",
     "Metal5.res",
-    "Metal5.iprobe",
-    "Metal5.diffprb",
     "TopVia1.drawing",
-    "TopVia1.net",
-    "TopVia1.boundary",
     "TopMetal1.drawing",
     "TopMetal1.label",
     "TopMetal1.pin",
-    "TopMetal1.net",
-    "TopMetal1.boundary",
-    "TopMetal1.mask",
-    "TopMetal1.nofill",
-    "TopMetal1.slit",
     "TopMetal1.text",
-    "TopMetal1.noqrc",
     "TopMetal1.res",
-    "TopMetal1.iprobe",
-    "TopMetal1.diffprb",
-    "TopVia2.drawing",
-    "TopVia2.net",
-    "TopVia2.boundary",
-    "TopMetal2.drawing",
-    "TopMetal2.label",
-    "TopMetal2.pin",
-    "TopMetal2.net",
-    "TopMetal2.boundary",
-    "TopMetal2.mask",
-    "TopMetal2.nofill",
-    "TopMetal2.slit",
-    "TopMetal2.text",
-    "TopMetal2.noqrc",
-    "TopMetal2.res",
-    "TopMetal2.iprobe",
-    "TopMetal2.diffprb",
-    "Passiv.drawing",
-    "Passiv.label",
-    "Passiv.pin",
-    "Passiv.net",
-    "Passiv.boundary",
-    "Passiv.pillar",
-    "Passiv.sbump",
-    "Passiv.pdl",
-    "NoMetFiller.drawing",
-    "ThinFilmRes.drawing",
     "IND.drawing",
     "IND.pin",
     "IND.boundary",
     "IND.text",
-    "EdgeSeal.drawing",
-    "EdgeSeal.boundary",
-    "dfpad.drawing",
-    "dfpad.pillar",
-    "dfpad.sbump",
     "TEXT.drawing",
     "Recog.drawing",
     "Recog.pin",
     "Recog.esd",
     "Recog.diode",
     "Recog.tsv",
-    "Recog.iprobe",
-    "Recog.diffprb",
-    "Recog.pillar",
-    "Recog.sbump",
-    "Recog.otp",
     "Recog.pdiode",
     "Recog.mom",
-    "Recog.pcm",
     "DigiBnd.drawing",
     "DigiBnd.drawing0",
     "RES.drawing",
@@ -266,10 +143,7 @@ valid_layers_ihp_sg13g2 = [
     "SRAM.drawing",
     "SRAM.label",
     "SRAM.boundary",
-    "TRANS.drawing",
     "DigiSub.drawing",
-    "HeatTrans.drawing",
-    "HeatRes.drawing",
     "NoRCX.drawing",
     "NoRCX.m2m3",
     "NoRCX.m2m4",
@@ -292,135 +166,11 @@ valid_layers_ihp_sg13g2 = [
     "NoRCX.m4sub",
     "NoRCX.m5sub",
     "NoRCX.tm1sub",
-    "NoRCX.tm2sub",
-    "BiWind.drawing",
-    "BiWind.OPC",
-    "BasPoly.drawing",
-    "BasPoly.label",
-    "BasPoly.pin",
-    "BasPoly.net",
-    "BasPoly.boundary",
-    "EmWind.drawing",
-    "EmWind.OPC",
-    "DeepCo.drawing",
-    "EmPoly.drawing",
     "Varicap.drawing",
-    "EmWind3.drawing",
-    "EmWiHV3.drawing",
-    "ColOpen.drawing",
-    "ColWind.drawing",
-    "EmWiHV.drawing",
-    "DeepVia.drawing",
-    "LBE.drawing",
-    "BackMetal1.drawing",
-    "BackMetal1.label",
-    "BackMetal1.pin",
-    "BackMetal1.net",
-    "BackMetal1.boundary",
-    "BackMetal1.mask",
-    "BackMetal1.nofill",
-    "BackMetal1.slit",
-    "BackMetal1.text",
-    "BackMetal1.OPC",
-    "BackMetal1.noqrc",
-    "BackMetal1.res",
-    "BackMetal1.iprobe",
-    "BackMetal1.diffprb",
-    "BackPassiv.drawing",
-    "IntBondVia.drawing",
-    "IntBondMet.drawing",
-    "DevBondVia.drawing",
-    "DevBondMet.drawing",
-    "DevTrench.drawing",
-    "Redist.drawing",
-    "FBE.drawing",
-    "AntVia1.drawing",
-    "AntMetal2.drawing",
-    "AntMetal1.drawing",
-    "FLM.drawing",
-    "SNSRing.drawing",
-    "Sensor.drawing",
-    "SNSArms.drawing",
-    "SNSCMOSVia.drawing",
-    "SNSBotVia.drawing",
-    "SNSTopVia.drawing",
-    "NLDB.drawing",
-    "PLDB.drawing",
-    "RedBuLay.drawing",
-    "NLDD.drawing",
-    "PLDD.drawing",
-    "NExt.drawing",
-    "PExt.drawing",
-    "INLDPWL.drawing",
-    "nBuLayCut.drawing",
-    "GraphBot.drawing",
-    "GraphTop.drawing",
-    "GraphCont.drawing",
-    "SiWG.drawing",
-    "SiWG.nofill",
-    "SiGrating.drawing",
-    "SiNGrating.drawing",
-    "GraphPas.drawing",
-    "GraphPad.drawing",
-    "GraphMetal1.drawing",
-    "GraphMetal1.nofill",
-    "GraphMetal1.slit",
-    "GraphMetal1.OPC",
-    "GraphMet1L.drawing",
-    "GraphMet1L.nofill",
-    "GraphMet1L.slit",
-    "GraphMet1L.OPC",
-    "GraphGate.drawing",
-    "SiNWG.drawing",
-    "SiNWG.nofill",
-    "PWell.drawing",
-    "PWell.label",
-    "PWell.pin",
-    "PWell.net",
-    "PWell.boundary",
-    "IC.drawing",
-    "NoDRC.drawing",
-    "RadHard.drawing",
-    "MemCap.drawing",
-    "SMOS.drawing",
-    "Polimide.drawing",
-    "Polimide.label",
-    "Polimide.pin",
-    "Polimide.net",
     "EXTBlock.drawing",
-    "NExtHV.drawing",
-    "PExtHV.drawing",
-    "MEMPAD.drawing",
-    "HafniumOx.drawing",
-    "MEMVia.drawing",
-    "RFMEM.drawing",
-    "FGEtch.drawing",
-    "CtrGat.drawing",
-    "FGImp.drawing",
-    "AlCuStop.drawing",
     "prBoundary.drawing",
     "prBoundary.label",
     "prBoundary.boundary",
-    "Exchange0.drawing",
-    "Exchange0.label",
-    "Exchange0.pin",
-    "Exchange0.text",
-    "Exchange1.drawing",
-    "Exchange1.label",
-    "Exchange1.pin",
-    "Exchange1.text",
-    "Exchange2.drawing",
-    "Exchange2.label",
-    "Exchange2.pin",
-    "Exchange2.text",
-    "Exchange3.drawing",
-    "Exchange3.label",
-    "Exchange3.pin",
-    "Exchange3.text",
-    "Exchange4.drawing",
-    "Exchange4.label",
-    "Exchange4.pin",
-    "Exchange4.text",
     "isoNWell.drawing",
 ]