67 companies in this supply chain, sorted by market share.
Mueller Industries, Inc. (NYSE: MLI, HQ Memphis TN; ~$3.5B revenue) is North America's dominant vertically integrated brass rod and plumbing fittings manufacturer. Mueller Brass division operates the Port Huron, Michigan brass rod plant — one of the largest brass rod extrusion facilities in North America, producing C36000 free-machining brass rod and lead-free alloys (C69300 eco-brass) for plumbing fittings manufacturers. Mueller also manufactures finished brass fittings under the Streamline® brand and valves under the Mueller B&K and Klauke brands. Mueller's vertical integration — from brass rod through finished fittings — is unique among North American competitors. The company supplies the majority of brass plumbing fittings used in US residential construction. Mueller's Port Huron plant is one of only two significant US-domestic free-machining brass rod extrusion facilities.
Supplies these inputs
ACR Copper Tubing (refrigerant-grade) · Copper Fittings (refrigerant-grade)
Replaceability
Substitutability 20% · 1 mo to replace
Business segments
- Piping Systems (Copper Tube + PEX)50% rev
- Brass Products (Rod, Fittings, Valves)40% rev
- Industrial & Specialty Products10% rev
Welling (GMCC parent's motor brand) and GMCC are both divisions of Midea Group (SZSE: 000333); combined motor capacity of ~220 million units/year including BLDC motors for washing machines, dishwashers, fans, and inverter-driven appliance compressors. Welling supplies 1-in-3 air conditioners globally. BLDC motors require NdFeB magnets; China's April 2025 magnet export controls created upstream pressure on Welling's own production economics. Same Midea Group also owns Kuka robotics (Germany).
Supplies these inputs
Hermetic Compressors (HVAC)
Replaceability
Substitutability 30% · 4 mo to replace
Business segments
- GMCC Rotary HVAC Compressors (World #1)40% rev
- Welling BLDC Motors (Home Appliances)35% rev
- Kuka Industrial Robotics (Midea Group subsidiary)15% rev
- Midea Group Appliance OEM (Consumer Products)10% rev
Copeland LP (formerly Emerson Climate Technologies); world's dominant scroll compressor brand for residential and light commercial HVAC in North America. Primary manufacturing in Sidney, Ohio (flagship plant operational since 1939). In 2023, Emerson spun out its Climate Technologies division to private equity firm Blackstone for ~$14B — separating the world's largest scroll compressor maker from its industrial parent. ~35% North American market share for residential scroll compressors; 200M+ cumulative units shipped. AIM Act challenge: R-454B (new mandatory refrigerant) contains mildly flammable R-32 (A2L classification), requiring scroll compressors with specific safety enhancements not required for R-410A designs.
Supplies these inputs
Hermetic Compressors (HVAC)
Replaceability
Substitutability 30% · 3 mo to replace
Business segments
- Residential & Light Commercial HVAC Scroll Compressors50% rev
- Commercial Refrigeration Compressors30% rev
- Cold Chain Controls & Connected Systems20% rev
Danish refrigeration/HVAC controls maker; leader in electronic expansion valves, compressors and drives.
Supplies these inputs
Electronic Expansion Valves (EEV/EXV)
Replaceability
Substitutability 25% · 18 mo to replace
Business segments
- Climate Solutions40% rev
- Power Solutions35% rev
- Drives / Power Electronics25% rev
German family-owned copper products conglomerate (HQ Ulm, Germany), founded 1820 in Vöhringen. Dominant global supplier of copper alloy strip for electronic connector terminals — the world's largest flat-rolled copper products company by volume. In 2024 Wieland made two major moves: (1) announced a $500 million modernization/expansion of its East Alton, Illinois plant (formerly the Olin Brass flagship site, first opened 1916) to add a new hot-rolling mill and casting unit targeting EV and connector-strip growth, with Illinois contributing ~$231M in incentives; (2) acquired Aurubis's Buffalo, NY flat-rolled copper strip facility (Aug 30, 2024), absorbing ~500 employees and its specialty connector-grade strip capacity. Wieland's connector alloys portfolio includes new grades K58 and K75 (high-strength, miniaturization-ready) and the established STOL series. Also supplies ACR copper tube (Pine Hall NC), plumbing tube, and industrial copper products. In CuNiSi/Corson alloys Wieland competes directly with Japanese producers for automotive connector strip.
Supplies these inputs
ACR Copper Tubing (refrigerant-grade) · Copper Fittings (refrigerant-grade)
Replaceability
Substitutability 20% · 1 mo to replace
Business segments
- Copper Tube (ACR + Plumbing)40% rev
- Brass Rod, Strip & Profiles (via Schwermetall JV)40% rev
- Specialty Copper Alloys & Rolled Products20% rev
World's largest HVAC/refrigeration components maker; electronic expansion valves + thermal-management components for HVAC and EVs (Tesla supplier).
Supplies these inputs
Electronic Expansion Valves (EEV/EXV)
Replaceability
Substitutability 25% · 18 mo to replace
Business segments
- Refrigeration & HVAC components
- Automotive / EV thermal management
- Robotics actuators (emerging)
Swiss environmental MEMS sensor leader (humidity, flow, pressure, CO₂) for HVAC, appliances, automotive.
Supplies these inputs
MEMS Pressure Sensors & Thermistors
Replaceability
Substitutability 55% · 9 mo to replace
Business segments
- Humidity & Temperature Sensors38% rev
- Environmental Gas Sensors28% rev
- Liquid & Gas Flow Sensors22% rev
- Differential Pressure Sensors12% rev
Large Chinese maker of HVAC EC/PMSM fan and blower motors; supplies global HVAC OEMs and owns stakes in fuel-cell/EV motor ventures.
Supplies these inputs
ECM Fan Motors (HVAC)
Replaceability
Substitutability 60% · 9 mo to replace
Business segments
- HVAC EC Motors (Residential & Commercial)62% rev
- New Energy Vehicle (NEV) Motors22% rev
- General Industrial Motors16% rev
World's largest MEMS sensor maker (Bosch) — pressure, inertial, environmental MEMS; fabs MEMS for many fabless players.
Supplies these inputs
MEMS Pressure Sensors & Thermistors
Replaceability
Substitutability 45% · 12 mo to replace
Business segments
- Inertial & Motion Sensors42% rev
- Pressure & Altitude Sensors28% rev
- Environmental & Multi-Sensor22% rev
- Optical & Specialty Sensors8% rev
Formerly Embraco, acquired by Nidec Corporation (Japan) in 2019. World's leading brand for hermetic reciprocating compressors for household refrigerators, holding approximately 25% global market share with annual output of ~38 million compressor units.
Supplies these inputs
Hermetic Compressors (HVAC)
Replaceability
Substitutability 50% · 12 mo to replace
Business segments
- Household Refrigerator Compressors (World #1)80% rev
- Commercial & Specialty Refrigeration Compressors20% rev
Japanese fluorochemical maker; PFAS-based stain/water-resist finishes for textiles and carpet.
Supplies these inputs
HVAC Refrigerants (R-410A / R-32 / R-454B)
Business segments
- Air Conditioning
- Chemicals / Fluorochemicals
- Filtration & Other
Sensor maker (pressure, temperature, position) for automotive, HVAC/R, and industrial systems.
Supplies these inputs
MEMS Pressure Sensors & Thermistors
Replaceability
Substitutability 50% · 9 mo to replace
Business segments
- Automotive Sensing Solutions50% rev
- HVAC & Refrigeration Controls25% rev
- Industrial & Aerospace18% rev
- Electric Vehicle & Energy Transition7% rev
Swedish global leader in rolled aluminium for brazed heat exchangers — fin stock, tube, cladding for HVAC and automotive radiators/condensers. Plants in Sweden, US, China.
Supplies these inputs
Aluminum Fin Stock (heat exchanger)
Replaceability
Substitutability 45% · 9 mo to replace
Business segments
- Americas — HVAC & Automotive55% rev
- Europe & Asia — Specialty Rolled Products35% rev
- Heat Management Innovation10% rev
Mexico City-based diversified specialty chemical company (BMV: ORBIA); formed from Mexichem + Wavin + Netafim + other businesses. Fluorochemicals operations through the Koura brand (formerly Mexichem Fluor). Primary HFC production at Runcorn, Cheshire, UK (Koura Runcorn) — produces HFCs including R-404A components and HFO-1234ze alternatives. Also has fluorochemicals operations in Mexico (San Luis Potosí) and the US. Koura is one of the world's largest fluorochemical companies; the UK Runcorn site produces HCFCs, HFCs, and HFOs. As EU F-Gas Regulation phases out high-GWP HFCs, Koura/Orbia is transitioning its product portfolio toward HFOs. Orbia also makes water infrastructure products (Wavin), precision irrigation (Netafim), and data solutions.
Supplies these inputs
Fluorspar (Acid Grade)
Replaceability
Substitutability 15% · 24 mo to replace
Business segments
- Polymer Solutions (Vestolit + Alphagary)33% rev
- Building & Infrastructure (Wavin)31% rev
- Precision Agriculture (Netafim) — BEING DIVESTED14% rev
- Connectivity Solutions (Dura-Line)13% rev
Connectors and sensors (Measurement Specialties) — MEMS pressure transducers and temperature sensors.
Supplies these inputs
MEMS Pressure Sensors & Thermistors
Replaceability
Substitutability 55% · 9 mo to replace
Business segments
- Transportation Solutions (Automotive & EV)55% rev
- Industrial Solutions22% rev
- Data & Devices15% rev
- Medical & Defense8% rev
China's largest fluorochemical company (SHEX: 600160) based in Quzhou, Zhejiang; produces R-32, R-125, R-410A, and other HFC refrigerants at ~15% global HVAC refrigerant market share. Effectively locked out of US market by antidumping duties (101-216%) and 2024 circumvention rulings. China's largest HFC exporters (Juhua, Dongyue, Sinochem Lantian) supply Asian, European, and Latin American HVAC markets. Also produces HF acid, fluoropolymers, and PVDF — same Juhua Quzhou complex that produces HBM memory substrate chemicals also makes most of Asia's air conditioning refrigerant.
Supplies these inputs
Fluorspar (Acid Grade) · HVAC Refrigerants (R-410A / R-32 / R-454B)
Replaceability
Substitutability 10% · 2 mo to replace
Business segments
- HFC Refrigerants (R-32, R-125, R-410A, R-134a)50% rev
- PVDF & Fluoropolymers (Battery + Semiconductor + Membranes)30% rev
- HF Acid & Fluorite Processing15% rev
- PTFE & Other Fluoroplastics5% rev
China's pioneering NdFeB magnet producer (SHEX: 000970); first company to achieve industrialized NdFeB production in China. Headquartered in Ningbo region, Zhejiang Province. ~16.4% global high-performance NdFeB segment market share. 2025 net profit +660% YoY to 91.32 million yuan (revenue 6.641B yuan) — benefited directly from China's April 2025 export licensing controls which constrained competitors' export access while Zhong Ke San Huan retained licenses. Primary supplier to EV manufacturers, wind turbine OEMs, and precision equipment makers.
Supplies these inputs
NdFeB Rare Earth Magnets
Replaceability
Substitutability 15% · 24 mo to replace
Business segments
- High-Performance NdFeB Magnets (EV & Wind)55% rev
- Precision & Electronic Magnets25% rev
- Rare Earth Processing & Strip Casting15% rev
- Export & International Markets5% rev
Hangzhou-based Chinese fluorspar producer with estimated ~14% global acid-grade market share. Operates domestic flotation facilities in China and investing in MINGLIDA Mongolia expansion (200-300K tpy). Key supplier to China's domestic HF acid and fluorochemical industries.
Supplies these inputs
Fluorspar (Acid Grade)
Replaceability
Substitutability 15% · 18 mo to replace
Business segments
- Acid-Grade Fluorspar (Domestic China)65% rev
- Mongolia Expansion (MINGLIDA)25% rev
- Downstream Fluorochemicals10% rev
