China Membrane Switch Factory – LID CO., LIMITED

China Membrane Switch Factory – LID CO., LIMITED


One-Stop OEM/ODM Headquarters for Global HMI Solutions


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LID CO., LIMITED – China’s Premier Membrane Switch Factory


Located in Foshan, Guangdong, LID CO., LIMITED operates a 12 000 m² ISO 13485 / AS9100 / IATF 16949-certified plant equipped with:


• Class 10 000 clean-room screen-printing lines


• Roll-to-roll laser direct imaging (LDI) for 100 µm trace/space


• Automated dome-placement robots (±5 g force repeatability)


• In-house EMI chamber (3 m semi-anechoic, 18 GHz)


• IP69K wash-down test bay (80 °C, 10 MPa, 30 s cycles)


All under one roof: membrane switches, graphic overlays, FR4-PCB hybrids, silicone keypads, and cable harnesses.


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Factory Capabilities Snapshot


Capability Specification 

Daily Output 50 000 membrane switches / 20 000 silicone keypads 

Trace/Space 100 µm (copper-FPC), 200 µm (silver-flex) 

Actuation Life 1 M (poly dome) – 5 M (stainless dome) 

Sealing IP54 → IP69K 

EMI Shield 60 dB @ 1 GHz, MIL-STD-461G pass 

Fastest Prototype 48 h laser-cut, no tooling fee 


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Certifications & Audits


• ISO 13485 – Medical devices


• AS9100 – Aerospace & defense


• IATF 16949 – Automotive


• IEC 60601-1-2 EMC – Medical-grade EMI


• RoHS / REACH / UL 94 V-0 / FDA GMP


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Global Supply Chain Advantages


1. Vertical Integration


Raw PET/PC films, conductive inks, stainless domes, LEDs, and connectors all sourced within 50 km radius → cost ↓ 20–40 % vs. Western suppliers.


2. Flexible MOQs


   • 1 piece prototype


   • 50 pieces production start


   • 100 000 pieces volume ramp without tooling change


3. Logistics Hub


   • Shenzhen Port – 1 h truck ride


   • DHL/UPS/FedEx pickup daily → 3–5 days door-to-door worldwide


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Typical Customer Industries


• Medical – infusion pumps, dialysis, ventilators


• Military / Aerospace – UAV ground stations, cockpit panels


• Industrial – CNC, PLCs, packaging machinery


• Automotive – EV charging, HVAC, dashboard clusters


• Food & Beverage – IP69K wash-down panels


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Quick RFQ Guide


Send us one of the following for a same-day quotation:


1. DXF or AI overlay artwork  

2. Schematic or pin-out list  

3. Force curve target  

4. Sealing / EMC spec


High-quality membrane switches require precise design inputs. These critical documents ensure the final product functions as intended. Accurate membrane switch overlay artwork, often provided as a DXF or AI file, defines the graphic interface. This artwork dictates button shapes, labels, and colors. It also specifies the exact placement and size of each element.

A clear schematic or pin-out list is equally vital. This document details the electrical connections between the switch and the larger system. It maps each tactile key to its corresponding output signal. Understanding the target actuation force is also essential.

A force curve specifies how much pressure is needed to activate a switch. This ensures a comfortable and reliable user experience.

Finally, sealing and EMC specifications are crucial for durability and interference prevention. Sealing prevents dust and moisture ingress. EMC specifications ensure the switch does not disrupt other electronic devices.


China Membrane Switch Factory – LID CO., LIMITED


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Contact the China Membrane Switch Factory


LID CO., LIMITED


02, Chengfen Rd., Ronggui, Foshan City, Guangdong, China 528303


T: (0757) 8499 2835 | F: (0757) 8624 9932


Website: https://tactilemembrane.com


E: info@tactilemembrane.com | tactilemembrane@163.com


Whether you need 10 000 military-grade switches or 1 medical prototype, LID CO., LIMITED delivers China quality at China speed—with world-class documentation.

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