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About Us

Dongguan Tunuo Digital Technology Co., Ltd., established in 2012, is a professional manufacturer of heat transfer printing materials and products. With two major production bases located in Dongguan (Guangdong) and Jiujiang (Jiangxi), we cover over 20,000 square meters and employ approximately 150 skilled staff.
We offer complete in-house capabilities, including design, mold-making, injection molding, spraying, textile processing, coating, packaging, warehousing, and quality control. Our team consists of experienced professionals with over 10 years in the industry, providing one-stop solutions from raw materials to finished products.
Learn More About Us

Tunosub

Sublimation Phone Case Manufacturing

Sublimation Phone Case Manufacturing offers over 5,000+ case mould options including 2D cases, 3D cases, and coating 2-in-1 cases, with a high monthly output of 2,000,000 pieces. The production meets stringent quality standards backed by certifications such as ISO9001, CE, FCC, ROHS, and BSCI. As a source factory, it provides reliable custom printing services and supports sample requests to ensure client satisfaction.

Factory Profile

Our company was founded in 2009, after years of development, we have formed a complete and efficient company structure. The company consists of several departments, including R&D department, production department, quality control department, sales and customer service department. The close collaboration between each department ensures that each step of the process can achieve the highest standards and efficiency.

Fully automatic coating machine

Fully automatic coating machine specializing in the production of sublimation film and DTF white ink blanching film, utilizing imported raw materials and Korean technology to ensure high quality. Custom sizes and specifications are available to meet diverse requirements.

Textile Factories

Textile Factories specializing in the production of bags, clothing, baby textile items, blankets, pillow covers, pot holders, doormats, towels, and various household goods, offering comprehensive manufacturing solutions for diverse textile needs.

Flat Automatic Spraying Workshop

Flat Automatic Spraying Workshop specializing in surface treatment for various materials including ceramics, plastic, hardware, glass, rock slates, crystal, acrylic, as well as customized products like refrigerator stickers, bottle openers, coasters, lighters, and more.

CNC, Mold & Stamping Department 

CNC, Mold & Stamping Department specializing in manufacturing various sublimation products including pendants, charms, household goods, pet supplies, aluminum plates, license plates, signage, hardware pendants, and other sublimation supplies. Our precision engineering capabilities ensure high-quality production for all your customization needs.

Factory Profile

Our company was founded in 2009, after years of development, we have formed a complete and efficient company structure. The company consists of several departments, including R&D department, production department, quality control department, sales and customer service department. The close collaboration between each department ensures that each step of the process can achieve the highest standards and efficiency.

2012

Founded in Dongguan by an industry veteran in the mobile accessories field, focusing on sublimation phone case blanks.

2014

Launched in-house mold design and injection workshops; expanded into pendants and home goods.

2016

Established an independent R&D team, focusing on sublimation process innovation, mold development and material application.

2017

Invested in automated spraying and coating lines, enabling surface treatment for plastic, metal, ceramic, and more.

2018

First large-scale export orders delivered to Europe and North America; started serving B2B clients like gift companies and e-commerce sellers.

2019

Built a specialized international sales team to serve clients across Europe, Southeast Asia, and the Middle East directly.

2020

Introduced fully automatic coating lines; began in-house production of PET film, DTF transfer film, and sublimation paper matching global quality standards.

2021

Launched no-MOQ customization service to support small-batch sampling and fast product launches for brands and OEM clients.

2022

Established presence across global digital platforms, including TikTok, and Alibaba International, enhancing global brand visibility.

2023

Second production base established in Jiujiang, Jiangxi; textile product lines launched including T-shirts, tote bags, and pet items.

2024

SKU count exceeded 5,000; formed a dedicated 10-person warehousing team for fast fulfillment and bulk supply.

2025

Celebrating 13 years of growth — committed to becoming a trusted global partner in sublimation customization solutions.

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Qualifications & Certifications

As a quality-conscious company, our products have passed a number of international certifications to ensure that our products comply with regulations and safety standards around the world. These certifications include but are not limited to:

Quality Control

Our inspection process is comprehensive and multi-layered, ensuring no defects are passed to subsequent processes through rigorous quality control at every stage, ultimately guaranteeing that all products strictly meet customer requirements and expectations.

1.Material Picking: Confirm materials received according to order.

2.Mould Installation Inspection: Oil temperature and machine confirmation ,mold cleaning.

3.First Injection: Ensure meets the sample or drawing and passed the test.

4.Injection Molding: Check the product parameter stability, no defects, no deformation

5.Process Inspection: Confirm product meets the requirements and test standards.

6.Inkjet/Silk Screen Printing: Checking ink color, light leakage, scratches and other appearance defects.

7.Baking: Check the baking temperature and baking time

8.Injection Molding: Ensure no appearance defects such as burrs, discoloration, scratches, dirt, etc.

9.Packaging: Check quantity, labeling and packaging methods same as order.

10.FQC Inspection: Random inspection of product appearance, quantity, labeling and mixing.

11.Finished Product Inspection: Check quantity and mark to prevent quantity errors and over-high stacking.

12.Shipping inspection: Full inspection of product quantity, model and outer box marking.

Production Process

01 Mold Design
02 Mold Making
03 CNC Processing
04 Spraying
05 Injection Molding
06 Production
07 QC Inspection
08 Packaging
09 Warehousing
10 Transportation