Hong Kong Based • China Connected

Your Trusted Electronics Sourcing Partner in Asia

From prototype to mass production — we handle factory selection, quality inspection, and logistics so you can focus on growing your business.

Get a Free Quote See How It Works
A
B
C
Trusted by importers across 15+ countries
Circuit board electronics manufacturing Electronics quality inspection
Quality Verified
500+ Products Sourced
Shenzhen • Guangzhou
0+ Years in China Sourcing
0+ Products Successfully Sourced
0+ Verified Factory Partners
0+ Countries Served Worldwide
What We Do

End-to-End Sourcing Solutions

From finding the right factory to delivering products at your door — we manage every step of the supply chain.

Factory Sourcing

We identify, vet, and shortlist the best manufacturers for your specific product requirements across Shenzhen, Guangzhou, and beyond.

Quality Inspection

Pre-shipment, during production, and container loading inspections. AQL sampling, functional testing, and detailed photo reports.

Product Development

From concept to prototype. We work with engineers and factories to develop your electronics product with precision and speed.

Price Negotiation

Leverage our local presence and supplier relationships to negotiate the best prices, MOQs, and payment terms for your orders.

Shipping & Logistics

Door-to-door freight solutions — sea, air, and express. We handle customs documentation, consolidation, and tracking.

Trade Assurance

Secure payment handling, contract management, and dispute resolution. Your money is protected until you're satisfied.

How It Works

From Inquiry to Delivery

Our streamlined 4-step process makes sourcing from China simple, transparent, and risk-free.

01

Share Your Requirements

Tell us what you need — product specs, target price, quantity, and timeline. We'll assess feasibility within 24 hours.

02

Factory Matching & Samples

We shortlist 3-5 verified factories, negotiate quotes, and arrange samples for your approval before any bulk order.

03

Production & Quality Control

Our team monitors production on-site, conducts inspections at every stage, and sends you real-time progress updates.

04

Shipping & Delivery

We handle packaging, customs documentation, and freight forwarding. Track your shipment door-to-door until it arrives safely.

Specializations

Electronics Categories We Source

Deep expertise in electronics sourcing from China's top manufacturing hubs.

PCB circuit board

PCB & Semiconductors

Custom PCB fabrication, PCBA assembly, IC components, and semiconductor sourcing from certified Shenzhen factories.

  • PCB Assembly
  • SMT
  • IC Chips
  • Flex PCB
Consumer electronics devices

Consumer Electronics

Smartphones, tablets, wearables, audio devices, and smart home products with OEM/ODM customization.

  • Wearables
  • Audio
  • Smart Home
IoT smart home devices

IoT & Smart Devices

IoT modules, sensors, gateways, and connected devices. From NB-IoT to LoRa and WiFi-based solutions.

  • Sensors
  • Gateways
  • Modules
LED lighting

LED & Lighting

LED strips, panels, drivers, smart bulbs, commercial lighting, and custom LED solutions from Zhongshan and Shenzhen.

  • LED Strips
  • Drivers
  • Smart Bulbs
Electronic cables and connectors

Cables & Connectors

USB cables, power adapters, custom wire harnesses, and industrial connectors with full certification support.

  • USB-C
  • Harnesses
  • Adapters
Battery cells and power systems

Batteries & Power

Li-ion cells, battery packs, BMS modules, solar controllers, and UPS systems with UN38.3 and IEC certification.

  • Li-ion
  • BMS
  • Solar
Entertainment electronics gaming

Entertainment Electronics

Speakers, headphones, projectors, gaming accessories, TV boxes, karaoke systems, and home theater equipment from top Guangdong factories.

  • Speakers
  • Projectors
  • Gaming
  • Home Theater
Circuit board Container ship Quality control Gaming electronics Electronics PCB Warehouse logistics Circuit board Container ship Quality control Gaming electronics
Why Green Sign

The Advantage of a Hong Kong Partner

We combine the proximity and language advantage of being in China with the business standards, legal protections, and transparency that international buyers expect.

Hong Kong registered company with direct factory access across mainland China — giving you legal security and supply chain depth.

01

On-the-Ground Team

Our sourcing agents visit factories in person. No middlemen, no guesswork — just verified suppliers.

02

Bilingual Communication

We speak Mandarin, Cantonese, and English fluently. Nothing gets lost in translation.

03

Transparent Pricing

No hidden fees. You see the factory price, our service fee, and shipping cost separately — complete cost clarity.

04

IP Protection

NDAs, mold ownership agreements, and factory exclusivity contracts to protect your designs and brand.

Client Stories

What Our Clients Say

"Green Sign helped us source custom LED controllers from Shenzhen. The quality inspection process gave us confidence before we committed to a 10,000-unit order."

R
Robert K. Lighting Distributor, Germany

"We've been working with Green Sign for 3 years. They found us a PCB assembly factory that cut our unit cost by 35% without compromising quality. Their quality reports are incredibly detailed."

S
Sarah M. IoT Startup Founder, UK

"Communication was outstanding. They handled everything from factory visits to customs paperwork. Our USB cable order arrived on time and passed all compliance tests."

D
David L. E-commerce Seller, USA
FAQ

Frequently Asked Questions

MOQ depends on the product and factory. For electronics, typical MOQs range from 100 to 1,000 units. We negotiate lower MOQs for first orders and can arrange sample orders of 5-50 units to test before committing.

We conduct three levels of inspection: initial production check, during-production inspection, and pre-shipment final inspection using AQL 2.5 standards. We provide detailed photo/video reports and can arrange third-party lab testing for compliance certifications.

Factory matching takes 3-5 business days. Samples typically arrive in 7-14 days. Production time varies by product (15-45 days for most electronics). Shipping is 5-7 days by air or 25-35 days by sea. Total timeline: 4-8 weeks for a first order.

Standard terms are 30% deposit before production and 70% balance before shipment via T/T (bank transfer). We also support PayPal, Western Union, and L/C for larger orders. Your deposit is protected — we hold it in escrow until factory confirmation.

Yes. We work with accredited labs in Shenzhen and Guangzhou for CE, FCC, RoHS, UL, and other certifications. We'll guide you on which certifications your product needs for your target market and manage the entire testing process.

Absolutely. We can arrange custom branding, packaging design, logo printing, and full OEM product development. Most factories we work with offer OEM/ODM services with NDA protection for your designs.

Ready to Source from China?

Tell us what you're looking for and get a free sourcing proposal within 24 hours. No commitment, no hidden fees.

Start Your Project
Get In Touch

Let's Discuss Your Sourcing Needs

Send us your product requirements and our team will get back to you within 24 hours with a detailed sourcing plan.

Location Hong Kong SAR, China
Website greensignhk.com

We respond to all inquiries within 24 hours.