Abstract: The most expensive single component in a foldable phone is not the display—it is the hinge. The flexible screen MIM hinge is a precision mechanical assembly manufactured through metal injection molding, engineered to survive hundreds of thousands of fold cycles without damaging the screen or the internal components. The China flexible screen MIM hinge market is projected to grow from USD 711.03 million in 2024 to USD 1,731.05 million by 2031, at a CAGR of 9.43%. The top three players held approximately 65.29% of 2024 revenue. This analysis explains why MIM hinge economics are driven not by design elegance but by manufacturing yield—and why the suppliers who win are the ones who can hold micron-level tolerances across a hundred tiny parts at a cost the mid-range foldable can absorb.

What Is a Flexible Screen MIM Hinge?
Flexible Screen MIM Hinges are specialized mechanical components used in devices with flexible screens—such as foldable smartphones—manufactured using Metal Injection Molding (MIM) technology. MIM combines the benefits of powder metallurgy and injection molding to create highly complex, precision metal parts. These hinges allow flexible screens to fold, bend, and pivot without damaging the screen or internal components, while offering durability and structural integrity.

The engineering reality is more demanding than the definition suggests. A single hinge assembly contains 50 to 100 micro-functional parts, with critical dimensional tolerances held to ±0.01 to 0.03 millimeters. Dozens of miniature gears, cams, and pivot shafts nest inside the assembly; if any one part exceeds tolerance, the folding feel shifts from smooth to gritty. MIM became the dominant process because injection molding can form complex asymmetric geometries in a single shot, while sintered density delivers deformation resistance up to 1,900 MPa.

Market Size and Competitive Landscape
According to QYResearch’s China Flexible Screen MIM Hinges Market Report 2025–2031, the China market is projected to grow from USD 711.03 million in 2024 to USD 1,731.05 million by 2031, at a CAGR of 9.43%. In 2024, the top three players accounted for approximately 65.29% of revenue. Key players profiled include Amphenol, Asia Vital Components (AVC), KH Vatec, Jarllytec, Shin Zu Shing, NBTM New Materials, AAC Technologies, and Jingyan Technology.

Product segmentation reveals where volume concentrates. Water drop type hinges are the largest segment at 69.74% share—a structure that lets the screen form a teardrop arc rather than a hard crease when folded, materially reducing visible fold lines. By application, foldable inward/outward phones account for 70.55% of demand.

The competitive landscape is being reshaped by Apple’s entry. The first foldable iPhone, unveiled in September 2026, carries a hinge with more than 100 components, with Lingyi iTech supplying core precision structural parts at an estimated 80% share. Hinge content value per device is approximately USD 100–120—several times that of a conventional slab-phone structural assembly. The implication is that hinge value is not declining; it is concentrating among a small set of suppliers with proven MIM mass-production capability.

Industry data confirms the divergence. NBTM New Materials’ MIM business recorded revenue of RMB 1.307 billion in the first half of 2026, up 8.25% year over year, with foldable phone component revenue surging 219.3%. That growth occurred against a backdrop of declining foldable handset shipments—evidence that rising per-device content and deepening MIM penetration are offsetting near-term volume weakness.

Market Drivers: Why Hinge Economics Are More Stable Than Handset Economics
The Value Concentration Effect
In Q1 2026, Huawei held 60% of China’s foldable phone market, Honor 21%, with OPPO, vivo, and Xiaomi following. By Q3, Huawei’s share exceeded 70%, with Samsung at 8.9%. Huawei’s cumulative foldable shipments surpassed 20 million units in October 2026.

For MIM hinge suppliers, the significance is customer concentration. A hinge maker that qualifies into a Huawei flagship program effectively locks in more than 70% of China’s high-end foldable demand, and Huawei’s flagship hinges use MIM. The MIM hinge market therefore does not depend on “everyone buying foldables”—it depends on “foldable buyers choosing Huawei.”

From CNC to MIM: An Irreversible Process Substitution
MIM penetration in foldable hinge core parts has exceeded 75%, with Huawei, Samsung, and Honor flagship hinges all using the process. The substitution logic is not precision—CNC can also achieve micron-level accuracy—but material utilization and mass-production economics.

CNC machining utilizes less than 5% of its raw material; a titanium or high-strength steel billet is 95% reduced to chips. MIM utilizes close to 98%, with only gates and flash requiring removal after injection. As foldables move from premium price points toward mid-range, hinge cost must fall—and CNC cannot physically get there. MIM is not an optional process; it is the only mass-production process.

Apple’s Entry as a Catalyst
Counterpoint Research forecasts iPhone foldable shipments of 6 million units in 2026, roughly 25% of the global foldable market. Apple’s hinge design imposes stricter process requirements: a liquid metal main shaft (industry speculation, unconfirmed by Apple), a titanium 3D-printed hinge cover, and a highly integrated assembly exceeding 100 components.

For the MIM supply chain, Apple’s order is more than a large customer—it is a technical endorsement. When Apple selects MIM as the hinge core manufacturing process, the pressure on Android brands to follow increases materially. Lingyi iTech’s approximately 80% hinge share demonstrates that the barrier to entry in this segment is not capital but yield and tolerance control—and yield comes from process accumulation, not equipment purchase.

Market Restraints: What Is Holding the Market Back
Foldable handset shipments are declining. China’s foldable phone shipments in Q3 2026 totaled 1.77 million units, down 32.7% year over year—the fourth consecutive quarter of decline. IDC attributes this to diminishing innovation returns on conventional form factors and rising memory costs pushing up device prices and suppressing replacement demand. The effect transmits directly to hinge procurement: one fewer phone sold means one fewer hinge assembly installed.

Intellectual property risk. As MIM hinge technology matures, patent disputes may emerge. International competitors’ patent portfolios covering hinge structures, material formulations, and process parameters could constrain Chinese manufacturers’ export reach.

Dependence on imported raw materials. Although MIM processing itself is highly mature in China, certain high-performance alloy powders—particularly premium titanium alloys and specialty stainless steels—still require import. Supply chain fragility and price volatility remain structural risks.

An Overlooked Observation: The Real Moat Is Yield, Not Design
The flexible screen MIM hinge industry has an open secret: liquid metal hinge yields have long been stuck at 60% to 70%. That means for every 100 hinge sets produced, 30 to 40 are scrap. The material, processing, and inspection costs of scrap are allocated to good units—which is a fundamental reason hinge prices remain high.

The most important procurement question is therefore not “can you build this design” but “what is your yield, and how is scrap cost allocated?” A supplier quoting 20% lower but running 55% yield may deliver at a higher effective cost than a competitor quoting 10% higher at 85% yield. MIM hinge competition is won or lost at the drawing stage—DFM (design for manufacturability) capability determines everything downstream.

A second overlooked factor: the impact of declining foldable shipments on the MIM hinge market is overstated. NBTM’s foldable component revenue grew 219% in H1 2026 while China’s smartphone market contracted. The reason is rising per-device value: Apple’s iPhone foldable hinge content is USD 100–120, several times that of conventional slab-phone structural parts. Fewer phones sold, but more MIM value per phone. Volume decline is partially offset by price/mix improvement.

A third factor: tri-fold and rollable designs are the next increment, not a substitute. A tri-fold requires two hinge sets, multiplying structural complexity and doubling per-device MIM value. If tri-fold volumes ramp in 2027–2028, the MIM hinge market gains a growth engine independent of overall handset shipments.

Outlook
The flexible screen MIM hinge market will sustain near-9% compound growth, driven by three forces: continued MIM penetration gains in hinges (moving above 75%), rising per-device hinge value as tri-fold and more complex structures emerge, and incremental orders as global brands follow Apple’s entry.

For buyers and investors, the evaluation criterion is not “who does MIM” but who leads on yield and DFM. Yield data does not appear on websites, but it shows up in quotations and delivery cycles. The gap between a supplier that needs three months for tooling trials and six months for yield ramp, and one that delivers samples in two weeks at 80% first-month yield, is not visible on an equipment list.

The hinge is the only mechanical part a foldable phone user touches every time they open and close the device. Its feel determines the user’s judgment of the entire product. Behind that feel is the micron-scale coordination of dozens of MIM hinge parts—and the manufacturing discipline that makes that coordination repeatable at scale.

Contact Us:
If you have any queries regarding this report or if you would like further information, please contact us:
QY Research Inc.
Add: 17890 Castleton Street Suite 369 City of Industry CA 91748 United States
EN: https://www.qyresearch.com
E-mail: global@qyresearch.com
Tel: 001-626-842-1666(US)
JP: https://www.qyresearch.co.jp