About Prime Supplies Factory
Prime Supplies Factory is a B2B manufacturing supplier. Our management office is set up in Shenzhen, China, and our large production factory is located in Dongguan, Guangdong.
We are an original direct factory. We mainly make customized wholesale phone cases, PSA graded card holders, card sleeves and a full range of 3C electronic accessories for global buyers.
We run complete in‑house manufacturing workshops equipped with plastic‑injection machines, precision CNC mold‑making equipment, surface‑treatment stations and packaging lines. We support small batch trial orders, logo laser engraving, custom size and custom‑material solutions for brand cooperation. Global importers can source bulk custom phone cases, high‑grade PSA card holder mass‑production and custom injection mold development for new‑product projects. All key production processes are completed in our Dongguan factory to ensure stable quality and reliable lead‑time. Buyers from Europe, North America and Southeast Asia choose us for factory‑direct supply, competitive wholesale price and one‑stop OEM & ODM manufacturing solutions.
We carry out strict full-process quality inspection from raw materials to finished products.
If you search for a Shenzhen factory for custom card sleeves, bulk phone cases or injection molding solutions, our quality control helps you cut after-sales risks.
We maintain long-term cooperation with global 3C distributors and card store retailers.
We support OEM & ODM customization for global brand buyers.
Get your free wholesale quotation by sending your demand via our WhatsApp or official email.
As a Shenzhen-based manufacturer of phone cases, PSA card holders and injection equipment, we are ready for your project consultation at any time.
Rigorous in‑house quality control inspection is implemented for every batch of wholesale PSA graded card holders, trading card sleeves and custom‑made bulk phone cases at our Dongguan‑based manufacturing facility.
Before packing and international shipment, our experienced QC inspectors conduct multi‑dimensional product checks covering surface condition, dimensional accuracy, structural stability and cosmetic defects.
Items with scratches, warping, misalignment or blemishes will be screened out directly to guarantee consistent product performance for global bulk buyers, distributors and resellers.
We execute full‑chain quality supervision: incoming raw material testing, injection molding monitoring, assembly sampling inspection and final finished‑goods verification.
Reliable manufacturing quality lowers after‑sales risks for our overseas B2B wholesale clients and supports stable long‑term large‑volume order cooperation.
Qualified finished‑goods of PSA graded card holders, trading card sleeves and custom bulk phone cases go to our packing zone after strict QC inspection.
Our workers sort, count and securely pack every wholesale order for international logistics and global delivery.
We adopt export‑grade packaging materials to prevent scratches, crush damage during long‑distance sea and air transportation.
Each bulk shipment is well‑arranged for B2B distributors, resellers and wholesale importers worldwide.
As a Dongguan original manufacturer, we support custom packaging and private‑label service for large‑volume overseas orders.
📧 Email: susannaauyeung2026@outlook.com
💬 WhatsApp: +85264430400
🏢 Address: Nanshan District, Shenzhen City, Guangdong Province, China
🌐 Facebook: https://www.facebook.com/PrimeSuppliesFactory
📸 Instagram: https://www.instagram.com/susan287442/