Zhejiang Zhengwei Machinery Co., Ltd.
A Chinese manufacturer of three-dimensional bag machinery since 2006 — from non-woven bags to the world’s first seamless luxury paper bag machine. Engineering the future of premium packaging production.
Eliminating the side seam — a first in luxury paper bag production.
For over thirty years, every paper shopping bag produced at industrial scale shared one fundamental flaw: a visible side seam created by the fold-and-glue process. Luxury brands accepted it as an unavoidable compromise.
In 2019, we did not accept it. Drawing on 13 years of die-cutting expertise from our non-woven and plastic 3D bag machinery, we developed the world’s first fully automated paper bag making machine without a side seam — producing luxury shopping bags with a cleaner exterior, stronger structure, and visibly premium quality.
Today, our patented seamless technology powers five dedicated machine models serving packaging manufacturers who supply fashion, cosmetics, jewelry and wine brands across Europe, the Middle East, Asia and Africa.
From the first non-woven bag to the seamless paper bag revolution
Nearly two decades of continuous innovation in three-dimensional bag machinery — each milestone bringing us closer to eliminating the side seam from luxury paper bag production.
Zhejiang Zhengwei Machinery founded in Ruian, Wenzhou. Research and development begins in the non-woven bag machinery sector.
Launch of our first three-dimensional non-woven bag making machine — immediate success across the Chinese and international markets.
Development of the 3D plastic bag making machine, expanding our product range and deepening our die-cutting expertise.
Industry breakthrough: launch of the world’s first fully automatic paper bag making machine without a side seam — our patented seamless technology is born.
Completion of the 3D PP bag making machine, consolidating our position as an industry leader in three-dimensional bag machinery.
CE certification obtained (Machinery Directive 2006/42/EC). Full expansion into the European market with our five-model seamless paper bag machine lineup: ZW-A11, ZW-A13, ZW-A11 Pro, ZW-A11 MINI, and ZW-A11 MAX.
60,000 m² engineered for production excellence
Our industrial campus comprises three production halls, a dedicated R&D center, and a service building — purpose-built to ensure uncompromising quality and efficient manufacturing at scale.
Engineers, technicians and specialists united by one mission
Over 100 professionals — mechanical engineers, product designers, assembly technicians, and after-sales support staff — all dedicated to advancing three-dimensional bag machinery for our customers worldwide.
50+ patents and CE certification for the European market
Our technology is protected by more than 50 national patents — both invention patents and utility models. All our machines are CE certified under Machinery Directive 2006/42/EC, fully compliant for import and installation throughout Europe.
CE Certification — Machinery Directive 2006/42/EC
Certificate No. M.2024.206.C96659 issued by UDEM International (Turkey). Valid until 05.02.2029. Reference standards: EN 60204-1:2018, EN ISO 12100:2010. Our machines meet all safety requirements for importation and installation in the European market.
From our factory to your facility — full end-to-end support
We manage complete logistics: professional packaging, loading with specialized equipment, and customs clearance support. Standard lead time: 45–60 days production + 30–35 days sea shipment to Europe.
Visit our facility or request a free bag sample
Our showroom displays every bag format produced on our machines. We offer free bag samples by courier and live video demonstrations for international customers who cannot visit in person.
Trusted by packaging manufacturers across Europe, the Middle East, Asia and Africa
Our machines are operating in more than 10 countries. We provide on-site installation, complete operator training, and continuous technical support — wherever in the world you produce.
Ready to partner with us?
Contact us for a quote, a factory visit, or a free bag sample. We respond within 24 hours.