Manufacturing Capability
Manufacturing Capability
Mimoyin is a Shenzhen-based manufacturer specializing in ePTFE waterproof breathable membranes, waterproof acoustic vent membranes, and pressure equalization vent solutions for consumer electronics, wearables, automotive electronics, and industrial devices. Since 2018 we have focused on one thing: helping device makers solve waterproofing, acoustic transparency, and pressure-balance challenges with reliable membrane materials and precision converting.
We are not a reseller. We manufacture the membrane and convert it in-house — from material selection and prototyping to validation testing and volume production.
Factory Overview
| Established | 2018 |
|---|---|
| Location | Songgang, Bao'an District, Shenzhen, Guangdong, China |
| Production workshop | 280 m² |
| Team | 6 (including 1 application engineer and 1 QC inspector) |
| Annual output | 5,000,000+ converted parts |
| Core products | ePTFE waterproof breathable membrane, waterproof acoustic vent membrane, pressure equalization vent membrane, and precision-converted membrane components |
Production Equipment
- 4 × precision die-cutting machines (flat-bed and high-speed registered)
- 3 × lamination / bonding machines
- 1 × high-speed slitting & rewinding machine
- 1 × high-precision laser cutting machine (added 2025)
Our converting line supports custom shapes, adhesives, and multi-layer lamination to match customer drawings and assembly processes.
Factory Photo Gallery
Quality Control & Testing
Every order is verified before shipment. In-house testing covers the parameters that matter to electronics customers:
- Air permeability / air-tightness — verified with a dedicated air-tightness tester
- Water entry pressure — measured with a water pressure tester to confirm IP67/IP68-rated protection
- Dimensional accuracy — caliper inspection against customer drawings
- Visual & appearance — high-resolution camera inspection of each part
Material Compliance
Our ePTFE membrane materials are RoHS 2.0 compliant. Testing was performed by Centre Testing International (CTI) — a CNAS/CMA-accredited laboratory — under IEC 62321 methods.
| Test report No. | A2240129904101001E |
|---|---|
| Sample | ePTFE waterproof and breathable film (white) |
| Tested for | Pb, Cd, Hg, Cr(VI), PBBs, PBDEs, Phthalates (DBP, BBP, DEHP, DIBP) |
| Result | All 10 restricted substances — Not Detected (N.D.) |
| Date | March 2024 |
This means the membrane we supply is safe for use in electronics exported to the EU and other RoHS-regulated markets.
Engineering Support
An acoustic vent membrane is a thin porous film that blocks liquid water while letting sound pass — the core component that protects a device’s speaker or microphone from ingress. Mimoyin supplies this as a converted component matched to your housing.
Most projects start with a drawing and a protection requirement. Our engineer supports you through:
- Membrane material selection (ePTFE / TPU / PU) based on your waterproof, acoustic, and pressure needs
- Prototype samples matched to your specifications
- Acoustic and waterproof performance tuning
- Reliability validation support (IP rating, aging, temperature cycling)
We work on a custom-per-spec basis — tell us the application and the constraint, and we propose the membrane and converting solution.
Talk to Our Team
Looking for a membrane supplier who actually manufactures and tests the material? Email [email protected] with your drawing or requirement, and we will respond with a material recommendation and sample offer.
Frequently Asked Questions
Q: What does Mimoyin manufacture?
A: Mimoyin manufactures ePTFE waterproof breathable membranes, waterproof acoustic vent membranes, and pressure equalization vent membranes, together with precision-converted components. We are not a trading company — we produce and convert the membrane in our own facility.
Q: Is Mimoyin’s ePTFE membrane RoHS compliant?
A: Yes. Our ePTFE membrane passed RoHS 2.0 testing by Centre Testing International (CTI), report No. A2240129904101001E (March 2024). All 10 restricted substances were Not Detected (N.D.), so the material is safe for EU and other RoHS-regulated markets.
Q: Can Mimoyin produce custom membrane shapes to our drawing?
A: Yes. We work on a custom-per-spec basis. Send us your drawing and the protection requirement (waterproof / acoustic / pressure), and we propose the membrane material — ePTFE, TPU, or PU — and the converting solution, with prototype samples and reliability validation support.
Q: Where is Mimoyin’s factory located?
A: In Songgang, Bao’an District, Shenzhen, Guangdong, China. The workshop was established in 2018, covers 280 m², and is staffed by a team of 6 including one application engineer and one QC inspector.
About the Author
Xue Haihua — Founder & CEO, Mimoyin Technology. With over 10 years in ePTFE membrane development and precision converting for consumer electronics, wearables, and automotive applications, he leads material selection, prototyping, and validation for every customer project.