Your Trusted End-to-End China Sourcing Partner

Comprehensive Product Categories • Custom Solutions • Reliable Quality & Value

Dawn view of the Husutong Yangtze River Bridge in Zhangjiagang: a cable-stayed bridge spanning calm water, silhouetted against a gradient sky of orange and blue, with a crescent moon and a star visible above, and small ships on the river; this photo is taken by Xiao Shunqing, co-founder of Welle Trade.

Your Bridge to China’s Supply Chain

We connect global businesses with trusted Chinese manufacturers,
delivering end-to-end solutions beyond simple trade.
From product design, R&D and prototyping to full-scale production,
we stand as your reliable partner for every step of the journey.

Our Services

We act as your reliable bridge connecting global clients with top-tier Chinese manufacturers. Beyond simple trade, we provide one-stop support in sourcing, customization, OEM, and product development to streamline your entire supply chain.

Standard Product Sourcing & Trade

We source qualified factories and reliable suppliers in China based on your product requirements. We handle procurement, quality control, logistics, and export, delivering standard products efficiently to customers worldwide.

Customized Products & OEM

We support customized and OEM manufacturing according to your design, branding, and specifications. We work directly with professional factories to ensure your tailored products meet your quality and production expectations.

Product R&D & Full-Cycle Development

We manage end-to-end product development from design, 3D modeling, prototyping, and testing to mass production and iteration. We integrate component suppliers and oversee the whole process, helping you bring new products to market smoothly.

About Us

We provide end-to-end sourcing, supply chain, and product development solutions for international buyers.

Who We Are

We are a family-owned business founded in 1992. Starting with chemical production, we expanded into domestic trade, polymer foam manufacturing, and later international trade.

Exterior view of Zhangjiagang Yingsheng Plastic Co., Ltd. office building: a modern multi-story structure with gray-white facade and glass windows, featuring vertical red Chinese characters "Yingsheng Plastic" and "EVA,PE Foam" on the side, a company name sign at the entrance, a product billboard on the right, set against a blue sky with white clouds and neat greenery around.
Our family-owned EVA foam factory
Aerial panoramic view of Zhangjiagang Free Trade Zone on a sunny day: a winding river runs through the city, flanked by modern high-rise residential and commercial buildings, wide urban roads, lush green spaces, with distant mountains under a clear blue sky dotted with white clouds.
Zhangjiagang Free Trade Zone

What We Do

With our own manufacturing experience and an extensive network of trusted factories, we understand how production really works. This allows us to quickly find qualified suppliers and deliver reliable customized solutions for you.

At Welle Trade, we strive to be more than a traditional trading company.
We are deeply passionate about supporting customers through the full product journey — from concept and prototype design, to sample testing, mass production, market launch, and ongoing product iteration.

We enjoy partnering with creative designers and ambitious entrepreneurs around the world, helping turn your innovative ideas into successful, market-ready products.

Bring your vision, design expertise, and understanding of your target market. Leverage our experience and China’s comprehensive, strong manufacturing ecosystem. Together, we can turn your ideas into reality and achieve your business goals.

Gang Wang

Founder, Welle Trade
Dye Dispersant & Chemical Manufacturing

Shunqing Xiao

Founder, EVA Foam Factory

Photographer

Sean Wang

CEO

Sourcing & Supply Chain Specialist

Jerry Wang

Project Manager

Supply Chain Management

Free Samples & Shipping Policy

We offer free material and product samples for standard items based on actual product availability. Please contact us in advance with your product details and required specifications. If you have your own preferred courier such as UPS, DHL, or FedEx, you may arrange a pickup directly from our office at no cost. If you do not have an established courier, we can arrange shipment through our partners. Shipping fees will be calculated based on the delivery address and charged to you accordingly.