The Manufacturers We Represent
Chuai Electronics is the export channel for two focused Chinese semiconductor manufacturers — one listed memory specialist and one MCU design house. Here is who they are, what they build, and exactly what our role is.
Purchase orders placed with the manufacturer, not sourced from open-market stock. Batch and date-code traceability on every reel.
Datasheets, selection guides, SDKs, reference designs and application notes — supplied under the manufacturer's own documentation set.
Design-in questions and failure analysis are escalated to the manufacturer's FAE team, with us acting as the technical interface.
Commercial invoice, packing list, HS classification, RoHS/REACH declarations and shipping to 30+ countries.
Puya Semiconductor — Memory ICs
A publicly listed non-volatile memory specialist, and one of the world's main suppliers of NOR Flash and EEPROM.
Puya Semiconductor (Shanghai) Co., Ltd.
Non-volatile memory & derivative chips · Shanghai, ChinaWhat they make
Puya focuses on low-power non-volatile memory and the chips built around it. Their portfolio is built on two core memory families, extended by a "storage +" strategy into microcontrollers and analog:
- SPI NOR Flash — H / L / U / N series organised by supply voltage, 1 Mbit to 1 Gbit
- I²C & SPI EEPROM — 2 Kbit to 2 Mbit, standard and automotive grades
- Automotive grade — AEC-Q100 qualified Flash and EEPROM for body, cluster and sensor modules
- PY32 microcontrollers — 32-bit Arm Cortex-M0+ MCUs, sharing the same low-power design philosophy
- Analog & KGD wafer service — power/reset building blocks and known-good-die for module makers
Company facts
| Full name | Puya Semiconductor (Shanghai) Co., Ltd. |
|---|---|
| Founded | 2016, Shanghai, China |
| Listing | Shanghai Stock Exchange, STAR Market — ticker 688766, listed 23 August 2021 |
| Business | Design and sale of integrated circuits; fabless |
| Market position | One of the world's main suppliers of NOR Flash and EEPROM |
| Documented scale | FY2025 revenue RMB 2.32 bn, +28.6% year on year — a record result per the company's published annual report summary |
| Typical applications | IoT devices, smartphones and peripherals, wearables, industrial control, automotive electronics, security and surveillance |
Technology characteristics
- Ultra-low power — deep-sleep and standby currents engineered for battery-powered and always-on devices
- Wide supply range — 1.65 V to 3.6 V families, so one part covers 1.8 V, 2.5 V and 3.3 V rails
- High reliability — endurance and data-retention ratings with full industrial temperature coverage
- Pin compatibility — footprints that interchange across the family, so changing density rarely means changing the PCB
- Cost-performance — the reason they win designs against larger legacy memory brands
Why a listed supplier matters to you
- Verifiable financials. Annual reports, filings and dividend records are public — you can check that your supplier will still be there in five years
- Disclosed capacity and quality systems. Audited processes, published reliability data and traceable change notification
- Long-term availability discipline. A public company cannot quietly exit a product line without a paper trail
- Faster escalation. When something goes wrong, the buck stops at a named, audited entity
Mesilicon — Microcontrollers
A specialist MCU design house covering 8051, Arm Cortex-M and RISC-V cores across 100+ part numbers.
Mesilicon Microelectronics
8-bit & 32-bit microcontrollers, high-voltage analog · ChinaWhat they make
Mesilicon is a dedicated microcontroller company: more than ten product series and a hundred-plus part numbers, deliberately spanning three instruction-set architectures so you can pick the core that fits the job rather than the one the vendor happens to sell.
- ME8S003 / ME8S005 — 1T 8051 8-bit MCUs for cost-driven control and legacy platform migrations
- ME32S003 — value-priced Arm Cortex-M0 line in small packages (QFN20 to LQFP32)
- ME32F030 / F031 / F029 — mainstream Cortex-M0 series with LCD/LED drive, touch and rich peripherals
- ME32G030 / G070 — low-power Cortex-M0 families for battery operation
- ME32H100 — Cortex-M0 with integrated high-voltage / motor-drive capability
- ME32F102 / ME32F103 — Arm Cortex-M3 performance tier, including CAN-capable variants for industrial and automotive buses
- ME32R070 — RISC-V core for dedicated, highly integrated designs
- ME340 bridge series — USB-to-UART interface conversion ICs
See the series we stock in depth → · other series available on request
Company facts
| Business | Fabless semiconductor design — microcontrollers and high-voltage analog |
|---|---|
| Founded | 2017 |
| Portfolio breadth | 10+ product series, 100+ part numbers across 8-bit and 32-bit MCUs |
| Target markets | Industrial control, motor control, rail transit and signalling, IoT, home entertainment and consumer electronics, automotive |
| Design heritage | Core technical team with 30+ years of MCU product-design experience; independently developed IP |
| Manufacturing model | Fabless — mature-process foundry partners plus a complete in-house test flow |
Technology characteristics
- 1.8 V to 5.5 V operation across the family — the same part drops into a 3.3 V design or a 5 V legacy rail, which removes level shifters and BOM lines
- On-chip oscillator specified at ±1% over the full temperature and voltage range — good enough to drop the external crystal in UART and timer-critical designs
- 12-bit ADC on the portfolio, with rail-to-rail op-amps on selected parts — sensor front-ends without external signal conditioning
- Reliability-first design philosophy — the stated priority is module accuracy, noise immunity and surge robustness rather than headline clock speed
- Full programming support — ISP, IAP and ICP, plus SDK and application notes for every series
Why an MCU specialist is useful
- You get a fit, not a compromise. Cost-driven 8-bit, mainstream M0, M3 with CAN, or RISC-V — the recommendation is driven by your circuit
- Pin-compatible upgrade paths. Design once on the value series and scale up within the family when the product spec grows
- Lower external component count. Wide voltage range and integrated analog shrink the surrounding BOM
- Direct engineering dialogue. Questions go to the people who defined the silicon, not to a call centre
Why Buy Through an Authorised Channel?
MCUs and memory parts are the components most often counterfeited. The channel you buy from is a quality decision.
Traceable Parts
Every shipment carries manufacturer lot and date codes. Ask us for the exact lot you will receive before you commit — we will send it in writing.
Documented Quality
Manufacturer test reports, RoHS / REACH declarations and AEC-Q100 qualification evidence on request, not on a case-by-case basis.
Price Integrity
Quotes come from the manufacturer's own price structure. We never substitute a part or a grade to make a target price — we tell you it is not possible.
Real Support
Datasheets, SDKs, application notes and firmware guidance come with the part. Design-in questions reach the manufacturer's FAE team.
Availability Planning
Allocation visibility, forecast support and price locks for running programmes — so a shortage does not stop your line.
Clear After-Sales
Written warranty terms, a documented return path for genuine quality issues, and escalation to the manufacturer when it is warranted.
Trademark and relationship notice. Mesilicon and Puya Semiconductor are independent manufacturers. Chuai Electronics is their authorised export distributor and channel partner; we are not the manufacturer and we do not design or produce these products. All product names, trade names and brands are the property of their respective owners and are used here to identify the products we distribute.
Company facts on this page are drawn from the manufacturers' published materials and, for Puya, from public stock market and annual report disclosures. Product pricing and availability are quoted per enquiry — we do not publish list prices.
Questions About a Manufacturer or a Part?
Tell us your application and we will tell you which series fits — and what it costs. Reply within 24 hours.
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