Summary

This report covers the market and supply-chain for Quartz Fabricated Parts used in semiconductor device fabrication, and the supporting supply chain. The report contains data and analysis from TECHCET’s data base and Sr. Analyst experience, as well as that developed from primary and secondary market research. Topics include High Purity Fabricated Quartz Parts market, supply chain from raw sand/powder, and base materials. Effort has been made to provide breakdown of the supply and market by supplier as well as region. Forecasts are based on semiconductor wafer starts growth and equipment systems forecast as well as technology developments and regional dynamics.

• Primarily focuses on the electronics/semiconductor related markets of quartz products, including quartz base materials and quartz components.
• Technological trend analysis, details on the supply-chain from high purity sand, base material manufacturers, and quartz fabricators are provided.
• Identifies trends of the electronics quartz industry, supply and demand highlights, and any shortcomings or issues faced by the industry.
• Provides guidance for business decisions relating to purchasing and industry quality improvement decisions.
• Provides focused information for supply-chain managers, process integration and R&D directors, as well as business development and financial analysts.
• Covers information about key suppliers, issues/trends in the electronics material supply chain, estimates on supplier market share, and forecast for the electronics material segments.
• Includes 3 Quarterly Updates, with updates on market trends and forecasts from the analyst.

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Table of Contents

1 EXECUTIVE SUMMARY - QUARTZ FABRICATED PARTS 
1.1 QUARTZ FABRICATED PARTS BUSINESS:MARKET OVERVIEW
1.2 QUARTZ FABRICATED PARTS BUSINESS:MARKET STRUCTURAL OVERVIEW
1.3 2024 QUARTZ FABRICATED PARTS MARKET LEADING INTO 2025
1.4 QUARTZ FABRICATED PARTS MARKET OUTLOOK
1.5 QUARTZ FABRICATED PARTS 5-YEAR UNIT SHIPMENT FORECAST BY SEGMENT
1.6 QUARTZ FABRICATED PARTS TECHNOLOGY TRENDS
1.7 QUARTZ FABRICATED PARTS MARKET SHARE:FABRICATION MARKET
1.8 FIRST QUARTER 2025 FINANCIALS OF TOP-4 SUPPLIERS
1.9  EHS, TRADE, AND/OR LOGISTICS ISSUES/CONCERNS - QUARTZ FABRICATED PARTS  
1.10  ANALYST ASSESSMENT OF QUARTZ FABRICATED PARTS MARKET TRENDS

2 SCOPE, PURPOSE AND METHODOLOGY
2.1 SCOPE, 26PURPOSE METHODOLOGY 
2.2 MARKET OVERVIEW AND DEFINITIONS - QUARTZ FABRICATED PARTS BUSINESS 
2.3 OVERVIEW OF TECHCET CMR(TM) OFFERINGS 

3 SEMICONDUCTOR INDUSTRY MARKET STATUS & OUTLOOK 
3.1 WORLDWIDE ECONOMY AND OUTLOOK
3.2 WORLDWIDE ECONOMY AND OVERVIEW 
3.2.1 WORLDWIDE ECONOMY AND SEMICONDUCTOR MARKET OVERVIEW
3.2.2 SEMICONDUCTOR INDUSTRIES TIES TO THE GLOBAL ECONOMY
3.2.3 SEMICONDUCTOR SALES GROWTH
3.2.4 TAIWAN OUTSOURCE MANUFACTURER MONTHLY SALES TRENDS
3.3 CHIPS SALES BY ELECTRONIC GOODS SEGMENT
3.3.1 FACTORS IMPACTING ELECTRONIC SYSTEMS OUTLOOK
3.3.2  PC OUTLOOK
3.3.3 SMARTPHONE OUTLOOK
3.3.4 AUTOMOTIVE INDUSTRY OUTLOOK
3.3.5  SERVERS / IT MARKET  
3.4 SEMICONDUCTOR FABRICATION GROWTH & EXPANSION
3.4.1 IN THE MIDST OF HUGE INVESTMENT IN CHIP EXPANSIONS
3.4.2 PUBLIC FUNDS STIMULATING PRIVATE INVESTMENTS IN EXPANSION ACROSS THE GLOBE
3.4.3 SEMICONDUCTOR SUPPLY CHAIN ANNOUNCED EXPANSIONS IN THE US
3.4.4 EQUIPMENT SPENDING TRENDS
3.4.5 TECHNOLOGY ROADMAPS  
3.5 POLICY & TRADE TRENDS AND IMPACT
3.6 SEMICONDUCTOR PRODUCTION (WAFER STARTS*) AND MATERIALS OVERVIEW
3.6.1 TECHCET WAFER STARTS FORECAST THROUGH 2029
3.6.2 TECHCET ELECTRONIC MATERIALS MARKET FORECAST THROUGH 2028


4 QUARTZ PARTS MARKET TRENDS 
4.1 QUARTZ FABRICATED PARTS BUSINESS:MARKET STRUCTURE
4.1.1 QUARTZ FABRICATED PARTS BUSINESS:MARKET OVERVIEW
4.1.2 2024 QUARTZ FABRICATED PARTS MARKET LEADING INTO 2025
4.1.3 QUARTZ FABRICATED PARTS MARKET OUTLOOK
4.1.4 QUARTZ FABRICATED PARTS 5-YEAR REVENUE FORECAST BY SEGMENT
4.1.5 QUARTZ FABRICATED PARTS PRODUCTION CAPACITY OF TOP SUPPLIERS
4.1.6 QUARTZ FABRICATED PARTS PRODUCTION BY REGION  
4.1.7 QUARTZ FABRICATED PARTS SUPPLY VS. DEMAND BALANCE:OVERVIEW
4.1.7.1 SUPPLY VS. DEMAND BALANCE:QUARTZ FABRICATED PARTS  
4.2 PRICING TRENDS
4.3 QUARTZ FABRICATED PARTS GENERAL TECHNOLOGY OVERVIEW
4.3.1 QUARTZ FABRICATED PARTS APPLICATIONS & TECHNOLOGY  
4.3.2 QUARTZ FABRICATED PARTS APPLICATIONS  DESCRIPTIONS 
4.3.3 QUARTZ FABRICATED PARTS USAGE BY SEMI APPLICATION
4.3.4 QUARTZ FABRICATED PARTS:WAFER SIZE AND EFFECT ON QUARTZ REQUIREMENTS
4.3.5 QUARTZ FABRICATED PARTS TECHNOLOGY TRENDS
4.4 REGIONAL CONSIDERATIONS:QUARTZ FABRICATED PARTS
4.4.1 REGIONAL ASPECTS AND DRIVERS  
4.4.2 REGIONAL ASPECTS AND DRIVERS - VOLUMES
4.5 EHS AND TRADE/LOGISTIC ISSUES 
4.5.1 RUSSIA INVASION OF UKRAINE
4.5.2 YEMEN’S HOUTHI ATTACKS IN THE RED SEA AND GULF OF ADEN CONTINUE  
4.5.3 PANAMA CANAL - HISTORIC DROUGHT IS OVER BUT GEOPOLITICS ARE A FACTOR
4.5.4 EHS ISSUES:ENVIRONMENTAL IMPACT
4.5.5 TRADE/LOGISTICS ISSUES  
4.6 ANALYST ASSESSMENT OF QUARTZ FABRICATED PARTS MARKET TRENDS

5 SUPPLY-SIDE MARKET LANDSCAPE 
5.1 QUARTZ FABRICATED PARTS MARKET SHARE:FABRICATION MARKET
5.1.1 QUARTZ FABRICATED PARTS MARKET SHARE:COLD FABRICATION (MACHINING)
5.1.2 QUARTZ FABRICATED PARTS MARKET SHARE:HOT FABRICATION (FUSED)
5.1.3  CURRENT QUARTER - SUPPLIERS'ACTIVITIES & REPORTED REVENUES:QUARTZ  
5.1.4 FIRST QUARTER 2025 FINANCIALS OF TOP-4 SUPPLIERS  
5.1.5 CURRENT QUARTER ACTIVITY:SHIN-ETSU  
5.1.6 CURRENT QUARTER ACTIVITY:TOSOH QUARTZ  
5.1.7 CURRENT QUARTER ACTIVITY:FERROTEC  
5.1.8 CURRENT QUARTER ACTIVITY:WONIK  
5.1.9 CURRENT ACTIVITY:HERAEUS COVANTICS
5.2 M&A ACTIVITY AND PARTNERSHIPS  
5.3 PLANT EXPANSIONS / INVESTMENTS  
5.4 PLANT CLOSURES:NONE
5.5 NEW ENTRANTS  
5.6 SUPPLIERS OR PARTS/PRODUCT LINES THAT ARE AT RISK OF DISCONTINUATIONS
5.7 TECHCET ANALYST ASSESSMENT OF QUARTZ SUPPLIERS

6 SUB-TIER SUPPLY-CHAIN, QUARTZ 
6.1 SUB-TIER SUPPLY CHAIN: SOURCES & MARKETS OVERVIEW
6.1.1 QUARTZ SUB-TIER SUPPLY-CHAIN MARKET BACKGROUND
6.1.2 QUARTZ SUB-TIER SUPPLY-CHAIN MARKET TRENDS
6.1.3 QUARTZ BASE MATERIALS 5-YEAR REVENUE FORECAST BY SEGMENT
6.1.4 SUB-TIER SUPPLY CHAIN: FUSED QUARTZ BASE MATERIALS MARKET SHARE:ALL FORMS
6.1.5 SUB-TIER SUPPLY CHAIN: FUSED QUARTZ BASE MATERIALS:TUBES AND RODS MARKET SHARE
6.1.6 SUB-TIER SUPPLY CHAIN: FUSED QUARTZ BASE MATERIALS:INGOTS AND BOULES MARKET SHARE
6.1.7 SUB-TIER SUPPLY CHAIN: QUARTZ BASE MATERIALS:SAND/POWDER MARKET SHARE
6.1.8 SEMICONDUCTOR-GRADE QUARTZ SUPPLY  
6.1.9 SEMICONDUCTOR-GRADE QUARTZ SUB-TIER SUPPLIER NEWS
6.2 SUB-TIER SUPPLY-CHAIN:DISRUPTIONS
6.3 SUB-TIER SUPPLY-CHAIN M&A OR PARTNERSHIP ACTIVITY  
6.4 SUB-TIER SUPPLY-CHAIN EHS AND LOGISTICS ISSUES
6.5 SUB-TIER SUPPLY-CHAIN “NEW” ENTRANTS  
6.6 SUB-TIER SUPPLY-CHAIN PLANT UPDATES  
6.7 SUB-TIER SUPPLY-CHAIN PLANT CLOSURES  
6.8 SUB-TIER SUPPLY-CHAIN PRICING TRENDS  
6.9 SUB-TIER SUPPLY-CHAIN TECHCET ANALYST ASSESSMENT 


7 SUPPLIER PROFILES 
APPLIED CERAMICS, INC.
BEIJING KAIDE QUARTZ CO., LTD
DONGHAI HONGWEI QUARTZ PRODUCTS CO., LTD.
DS TECHNO CO., LTD.
FERROTEC HOLDINGS CORPORATION
AND MORE …

8 APPENDIX 
8.1 TECHNOLOGY TRENDS/TECHNICAL DRIVERS:OUTLINE  
8.1.1 QUARTZ GENERAL TECHNOLOGY OVERVIEW & TECHNOLOGY TRENDS
8.1.2 CUSTOMER DRIVEN TECHNOLOGIES
8.1.3 NAND ROADMAPS AND CHALLENGES 3D NAND LEVELS W/ STACKS/TIERS  
8.1.4 3D NAND PROCESS ADVANCES REQUIRED  
8.1.5 MICRON UNVEILS BREAKTHROUGH NVDRAM: A DUAL-LAYER 32GBIT NON-VOLATILE FERROELECTRIC MEMORY WITH NEAR-DRAM PERFORMANCE  
8.1.6 ADVANCED LOGIC ROADMAPS AND CHALLENGES:LOGIC TRANSISTOR EST. ROADMAP  
8.1.7 ADVANCED LOGIC (FOUNDRY) NODE HVM ESTIMATE  
8.1.7.1 THE SEMICONDUCTOR SHOWDOWN: SAMSUNG AND TSMC'S GAA FETS VS. INTEL'S RIBBONFET
8.1.8 ADV LOGIC FUTURE TECHNOLOGY CHALLENGES
8.1.9 ADVANCING TECHNOLOGIES IMPLICATION TO PHOTOLITHOGRAPHY  
8.1.9.1 ADVANCING TECHNOLOGIES IMPLICATION TO PHOTOLITHOGRAPHY:DSA  
8.1.9.2 ADVANCING TECHNOLOGIES IMPLICATION TO  PHOTOLITHOGRAPHY: CENTURA SCULPTA BY APPLIED MATERIALS: SHAPING THE FUTURE OF SEMICONDUCTOR MANUFACTURING 
8.1.9.3 ADVANCING TECHNOLOGIES IMPLICATION TO PHOTOLITHOGRAPHY: LINE EDGE ROUGHNESS REDUCTION THRU DEPOSITION  
8.1.10 CFET ARCHITECTURE: CFET SCALING ADVANTAGE 
8.1.10.1 CFET ARCHITECTURE: COMPLEMENTARY FETS (CFETS)  
8.1.10.2 CFET ARCHITECTURE: CFET FUTURE PROSPECTS  
8.1.11 INORGANIC EUV RESIST:SPIN ON DEPOSITION 
8.1.11.1 INORGANIC EUV RESIST:ALD DEPOSITED   
8.1.12 SELF ALIGNED MULTI PATTERNING:SADP  
8.1.12.1 SELF ALIGNED MULTI PATTERNING:SAQP  
8.1.12.2 SELF ALIGNED MULTI PATTERNING:PEALD EQUIPMENT
8.1.12.3 SELF ALIGNED MULTI PATTERNING:CAN SAQP BYPASS EUV BEYOND 7 NM?  
8.1.13 EUV, MULTI PATTERNING AND GEOPOLITICS  
8.1.14 AREA SELECTIVE DEPOSITION (ASD)  
8.1.14.1 AREA SELECTIVE DEPOSITION (ASD):TU EINDHOVEN SELECTIVE ALD ENABLED BY PLASMA PRETREATMENT  
8.1.15 SPECIALTY/EMERGING DIELECTRIC AND APPLICATIONS

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List of Tables/Graphs

FIGURES

FIGURE 1.1: QUARTZ FABRICATED PARTS REVENUE FORECAST BY SEGMENT
FIGURE 1.2:  2023 QUARTZ SUPPLIER MARKET SHARE BY REVENUE (HOT & COLD)
FIGURE 1.3: TOP-4 QUARTZ MAKERS'QUARTERLY COMBINED SALES
FIGURE 3.1: HISTORICAL AND FORECASTED GDP GROWTH (2000:2029)
FIGURE 3.2: GLOBAL ECONOMY AND THE ELECTRONICS SUPPLY CHAIN  
FIGURE 3.3: WORLDWIDE SEMICONDUCTOR SALES ($B)  
FIGURE 3.4: TECHCET’S TAIWAN SEMICONDUCTOR INDUSTRY INDEX (TTSI) MOMENTUM TRACKER
FIGURE 3.5: 2024 SEMICONDUCTOR CHIP APPLICATIONS  
FIGURE 3.6: SMARTPHONE SHIPMENTS, WW ESTIMATES 
FIGURE 3.7:  GLOBAL LIGHT VEHICLE PRODUCTION FORECAST  
FIGURE 3.8:  US EV RETAIL SHARE FORECAST  
FIGURE 3.9: AUTOMOTIVE SEMICONDUCTOR FORECAST ESTIMATES 
FIGURE 3.10: AI VALUE FORECAST ($B’S USD)    
FIGURE 3.11: SCALE OF TODAY’S AI-CENTRIC DATA CENTERS
FIGURE 3.12: TSMC PHOENIX FAB INVESTMENT TO EXCEED US $65B  
FIGURE 3.13:  ESTIMATED GLOBAL FAB INVESTMENT 2024-2029 ($858.6B)    
FIGURE 3.14: ANNOUNCED PUBLIC STIMULUS AND RESPECTIVE SEMICONDUCTOR CHIP MANUFACTURING REGIONS  
FIGURE 3.15:  SEMICONDUCTOR SUPPLY CHAIN EXPANSIONS WITHIN THE US
FIGURE 3.16: GLOBAL TOTAL EQUIPMENT SPENDING (US$ M)  
FIGURE 3:17: TSMC LOGIC ROADMAP BY NODE  
FIGURE 3.18:  TECHCET WAFER START FORECAST BY NODE SEGMENTS  MILLIONS OF 200MM EQUIVALENTS PER YEAR  
FIGURE 3.19: TECHCET WORLDWIDE ELECTRONIC MATERIALS FORECAST  
FIGURE 4.1: QUARTZ FABRICATED PARTS REVENUE FORECAST BY SEGMENT
FIGURE 4.2: FABRICATED QUARTZ COMPONENTS MARKET SHARE % BY SUPPLIER  
FIGURE 4.3: 2023 QUARTZ FINISHED GOODS PRODUCTION BY COUNTRY (SUPPLY)
FIGURE 4.4: QUARTZ FABRICATED PARTS SUPPLY CAPACITY/DEMAND FORECAST
FIGURE 4.5: QUARTZ PRODUCTS FOR SEMICONDUCTOR APPLICATIONS
FIGURE 4.6: QUARTZ PRODUCTS FOR SEMICONDUCTOR APPLICATIONS  
FIGURE 4.7: QUARTZ PRODUCTS FOR DRY ETCH APPLICATIONS  
FIGURE 4.8: QUARTZ PRODUCTS FOR EPI APPLICATIONS  
FIGURE 4.9: 2023 QUARTZ FABRICATED PARTS  REVENUE SHARE BY REGION (SALES)
FIGURE 4.10: PANAMA CANAL SHIPPING  
FIGURE 4.11: GREENHOUSE GAS PROTOCOL, DETAILED CATEGORIES  
FIGURE 4.12:  SCOPE 3 EMISSIONS FOR SEMICONDUCTOR COMPANIES  
FIGURE 5.1:  2023 QUARTZ SUPPLIER MARKET SHARE BY REVENUE (HOT & COLD) 
FIGURE 5.2:  2023 QUARTZ SUPPLIER MARKET SHARE BY REVENUE:COLD FABRICATED  
FIGURE 5.3:  2023 QUARTZ SUPPLIER MARKET SHARE BY REVENUE:HOT FABRICATED  
FIGURE 5.4: TOP-4 QUARTZ MAKERS'QUARTERLY COMBINED SALES  
FIGURE 5.5: WONIK CURRENT QUARTER FINANCIALS  
FIGURE 5.6: #2 HERAEUS CONSOLIDATED 2023 FINANCIALS  
FIGURE 5.7: REPRESENTATION OF QUARTZ CRUCIBLE IN SI INGOT GROWTH
FIGURE 5.8: REPRESENTATION OF QUARTZ COMPONENTS  
FIGURE 6.1: QUARTZ PRODUCTS FOR SEMICONDUCTOR APPLICATIONS  
FIGURE 6.2: QUARTZ BASE MATERIALS REVENUE FORECAST BY SEGMENT  
FIGURE 6.3: ESTIMATED 2024 FUSED QUARTZ BASE MATERIALS SUPPLIER RANKING  
FIGURE 6.4: ESTIMATED 2024 FUSED QUARTZ BASE MATERIALS SUPPLIER RANKING:TUBES AND RODS  
FIGURE 6.5: ESTIMATED 2024 FUSED QUARTZ BASE MATERIALS SUPPLIER RANKING:INGOTS AND BOULES  
FIGURE 6.6: ESTIMATED 2023 FUSED QUARTZ BASE MATERIALS SUPPLIER RANKING  
FIGURE 8.1: END USE APPLICATIONS DRIVING NEW DEVICE PROCESSES  
FIGURE 8.2: 3D NAND STACKING DRIVES DIELECTRICS AND METALS PRECURSOR VOLUME  
FIGURE 8.3: 3D NAND PROGRESSION  
FIGURE 8.4: 32 GB NVDRAM WITH 1T 1C MEMORY LAYERS
FIGURE 8.5: GATE STRUCTURE ROADMAP
FIGURE 8.6: ADVANCED LOGIC (FOUNDRY) NODE ROAD MAP
FIGURE 8.7: RIBBON FET
FIGURE 8.8: MONO LAYER NANO SHEETS CHANNELS
FIGURE 8.9: ALD/ALE ENHANCEMENT OF NANO IMPRINT LITHOGRAPHY
FIGURE 8.10: DIRECTED SELF-ASSEMBLY
FIGURE 8.11: DSA PATENT FILING BY COMPANY  
FIGURE 8.12: DSA PATENT FILING SINCE 2023  
FIGURE 8.13: WHAT IS PATTERN SHAPING?  
FIGURE 8.14: REFINING EUV PATTERNING BY APPLIED MATERIALS  
FIGURE 8.15: COMPLEMENTARY FET (CFET)  
FIGURE 8.16: CFET IMPROVES PERFORMANCE IN TRACK SCALING  
FIGURE 8.17: MONOLITHIC CFET PROCESS FLOW EXAMPLE   
FIGURE 8.18: MCFET NEW FEATURE: MIDDLE DIELECTRIC ISOLATION
FIGURE 8.19: LOW TEMPERATURE GATE STACK OPTION EXAMPLES  
FIGURE 8.20: LOW TEMPERATURE SD/CONTACT OPTION EXAMPLES  
FIGURE 8.21: BSPDN ADVANTAGE: IR DROP REDUCTION  
FIGURE 8.22: INCREASING NUMBER OF ALD STEPS REQUIRED BY NEXT GENERATION GAA-FET AND CFET  
FIGURE 8.23: IMEC SUB-1NM TRANSISTOR ROADMAP, 3D-STACKED CMOS 2.0 PLANS  
FIGURE 8.24: INPRIA SPIN ON INORGANIC RESIST IS MUCH THINNER THAN STANDARD STACKS OF PHOTO RESIST  
FIGURE 8.25: PATENT FILING FOR MLD DEPOSITED EUV RESIST. SEARCH PERFORMED IN PATBASE
FIGURE 8.26: SADP PROCESS FLOW USING ALD SPACER  
FIGURE 8.27: ONE OF MANY FLAVORS OF SAQP PROCESS FLOW  
FIGURE 8.28: HUAWEI MAJOR SEMICONDUCTOR R&D CENTER IN SHANGHAI  
FIGURE 8.29: SELECTIVE ALD ENABLED BY PLASMA PRETREATMENT
FIGURE 8.30: SPECIALTY/EMERGING DIELECTRIC APPLICATIONS FOR HETEROGENOUS INTEGRATIONS (APPLIED MATERIALS)  

TABLES

TABLE 1.1: BREAKOUT OF FABRICATED QUARTZ MARKET BY HOT AND COLD FABRICATION  
TABLE 3.1: GLOBAL GDP AND SEMICONDUCTOR REVENUES  
TABLE 3.2: INITIALLY ANNOUNCED* US RECIPROCAL TARIFF SCHEDULE  
TABLE 3.3: WORLDWIDE PC FORECAST BY SEGMENT  
TABLE 3.4: IT MARKET SPENDING FORECAST, 2025
TABLE 4.1: BREAKOUT OF FABRICATED QUARTZ MARKET BY HOT AND COLD FABRICATION  
TABLE 4.2: BREAKOUT OF FABRICATED QUARTZ MARKET BY HOT AND COLD FABRICATION REVENUE  
TABLE 4.3: 2024 ESTIMATED FABRICATED QUARTZ COMPONENTS SHARE BY SUPPLIER  
TABLE 4.4: QUARTZ FABRICATED PARTS SUPPLIER MANUFACTURING LOCATIONS
TABLE 4.5: QUARTZ VOLUME BY SEMICONDUCTOR PROCESS APPLICATION
TABLE 4.6: COMPARISON OF TUBES AND BOATS ATTRIBUTES FOR 200MM AND 300MM PROCESSES  
TABLE 4.7: REGIONAL QUARTZ MARKET ATTRIBUTES AND EXPANSION ACTIVITY  
TABLE 4.8: 2024 REGIONAL QUARTZ VOLUMES CONSUMPTION  
TABLE 5.1: MOST RECENT QUARTERLY QUARTZ SUPPLIER SALES  
TABLE 5.2: SHIN-ETSU CURRENT QUARTER FINANCIALS  
TABLE 5.3: TOSOH CORP FY 2025 FINANCIALS
TABLE 5.4: FERROTEC ANNUAL (ENDING 3/2024) FINANCIALS  
TABLE 6.1: ESTIMATED HPQ (HIGH PURITY QUARTZ) VOLUMES
TABLE 8.1: LEADING EDGE LOGIC DESCRIPTIONS BY NODE (TSMC, INTEL)
TABLE 8.2: MULTIPATTERNING AT 7NM BY TSMC  
TABLE 8.3: SELECTIVE DEPOSITION - SELECTIVELY DEPOSITED MATERIALS

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