About us

We are packaging experts with 15 years of experience

We’ve helped over 30,000 clients across 95 countries elevate their unboxing experiences, ensuring their products are well-protected and leaving a lasting impression on their customers. Our custom packaging solutions are designed to captivate and safeguard, making every unboxing unforgettable.

Heidelberg offset printing machine in factory workshop.

What is important to us?

Enhance Your Brand Experience

We work with over 30,000 entrepreneurs, small businesses, and manufacturers to understand what truly matters for their unboxing experience: flexible order sizes, quality materials, fast turnarounds, superior printing, and scalability.

Customer-First Approach

We focus on building strong relationships by understanding our clients’ needs and offering personalized support, ensuring each order contributes to your brand's success.

Sustainable Materials and Processes

Sustainability is at the core of everything we do—from responsibly sourced raw materials to eco-friendly inks and sustainable production practices. All products are manufactured at our facility in Shenzhen, China—one of the country's most technologically advanced regions.

Sustainable Materials and Processes

We constantly innovate in response to customers' unique needs, advancing alongside our clients through research and continuous learning to deliver cutting-edge packaging solutions.

Collage of packaging factory images showing printing machines, laminators, stamping equipment, and workers assembling custom boxes.

About SLD Packing

Shenzhen Shenglongda Packaging Co., Ltd. is a fully-equipped packaging manufacturer with over 10 years of experience producing high-quality mailing boxes, folding cartons, product packaging, and rigid gift boxes. Our 6,000-square-meter factory in Shenzhen, China, is equipped with advanced machinery, including Heidelberg printing presses, automatic laminators, UV printers, and hot stamping machines. From material selection to final production, we focus on efficiency, quality, and customization to meet the diverse needs of our global clientele. We warmly welcome you to visit our factory and witness the exquisite craftsmanship behind each box.

what makes us different

The values we live by

Real Manufacturer

We have been operating a packaging factory since 2010. We cover an area of ​​6,000 square meters in Guangdong, China. To ensure the printing quality, we use Heidelberg equipment printing machines.

More reliable

Get highly customized packaging, enterprise-grade service and packaging solutions, no matter the size of your business. We always ensure strict quality control and on-time delivery.

More brand impact

With our fully customizable capabilities, we can leave a lasting impression on your customers with solutions designed for brand impact and recognition.

Certified & Trusted

We use FSC-certified materials and ROHS/REACH-tested adhesives, ensuring safety, sustainability, and compliance with international packaging standards.

Strictly Certified Raw Materials

We ensure the quality of our raw materials through strict certifications. All paper comes from reputable paper raw material mills and undergoes strict quality checks, including FSC certification for sustainable sourcing, RoHS testing for hazardous substances, and SVHC screening for REACH compliance. This ensures that our packaging meets the highest environmental and safety standards, providing you with reliable and environmentally friendly solutions.