Yantai ZS Bulk Bags Manufacturing Co., Ltd. — Your trusted source for mid-to-high-end Flexible Intermediate Bulk Containers. Serving global clients with 30+ years of OEM/ODM expertise, 60,000 m² dual-base production, and an annual output exceeding 3 million units.
Founded in 1988, we have dedicated over three decades to engineering reliable, cost-effective bulk packaging solutions for the world's most demanding industries.
Founded in 1988, Yantai ZS Bulk Bags Manufacturing Co., Ltd. is a professional manufacturer specializing in the customized design and production of mid-to-high-end FIBCs (Flexible Intermediate Bulk Containers). With over 30 years of dedication to the industry, we take cost-effective customized solutions as our core. Relying on solid technical accumulation and strict quality control, we have become a trusted choice for well-known enterprises both at home and abroad, and are committed to providing packaging solutions that carry trust and safeguard value for global customers.
The company boasts strong strength, with two modern production bases located in Laishan District and Muping District of Yantai City respectively, covering a total area of 60,000 square meters. It has more than 300 employees, including over 30 professional and technical personnel and inspectors. We have built a complete closed-loop industrial chain covering raw material processing to finished product manufacturing, strictly controlling quality and delivery efficiency from the source. Backed by advanced production equipment and a lean management model, we maintain a stable monthly output of over 250,000 units and an annual output exceeding 3 million units, capable of efficiently meeting both bulk procurement needs and personalized customization requirements.
Laishan & Muping Districts, Yantai — 60,000 m² total
300+ employees, 30+ technicians & QC inspectors
250,000+ units/month · 3,000,000+ units/year
Full customization from concept to delivery
Every figure reflects years of continuous investment in people, technology, and quality systems that keep our clients ahead.
From food-grade to industrial-grade, conductive to aluminum-lined — every bag engineered to your exact specification.
At Zhensheng, we not just supply products; we deliver reliability, creativity, and partnership. Let us help you stand out with unique designs, consistent quality, and on-time delivery.
✅ In-House
From raw materials to finished products, the entire process is strictly controlled and traceable, using 100% new materials in an ISO22000 cleanroom environment.
🎨 OEM/ODM
Full customization of size, load capacity, and structure for both food-grade and industrial applications. Professional OEM & ODM services supporting brand, design, and parameter customization.
🔬 QC
FDA- and ISO 9001-compliant production supporting both food-grade and industrial FIBC applications, with full-cycle quality control ensuring stable quality for large-volume orders.
🤝 Partnership
Our professional international sales team provides efficient bilingual support from inquiry to after-sales service. A partner you can count on for the long term.
We have built a complete closed-loop industrial chain covering raw material processing to finished product manufacturing, strictly controlling quality and delivery efficiency from the source.
Raw Material Procurement and Inspection
Drawing and Weaving
Cutting and Sewing
Installation of Lifting and Reinforcement Components
Additional Steps for Functional Ton Bags
Comprehensive Quality Control
Sorting and Dispatch
In the future, Zhensheng will continue to focus on technological upgrading and product innovation, striving to become a benchmark enterprise in the global mid-to-high-end FIBC customization sector, and looks forward to working with you to create brilliance together.
Our FIBC bags serve the most demanding sectors worldwide — engineered for performance, compliance, and reliability in every environment.
⚗️ Chemical
🌾 Food Grade
💊 Pharma
⛏️ Mining
🌱 Agriculture
⚡ Antistatic
We strictly comply with the standards of ISO 9001 Quality Management System and ISO 22000 Food Safety Management System certifications, ensuring every product meets international regulatory requirements for safety and quality.
From Europe to North America, Southeast Asia to the Middle East — ZS Bulk Bags delivers reliable FIBC solutions to every corner of the world. Our international logistics network ensures timely delivery, wherever your business operates.
ZS Bulk Bags maintains a fully integrated production system covering raw material procurement, manufacturing and processing, and final delivery. Leveraging our continuously innovative technologies and stringent quality management system, we ensure precision, efficiency, traceability and full controllability across every stage of production. We always place product quality and hygiene safety at the forefront, and adhere to stable and high-quality production standards — a commitment that secures our sustained core competitiveness in the industry.
Especially for FIBCs designed for food-grade and high-hygiene applications, we use 100% virgin polypropylene raw materials, with all technical specifications strictly complying with FDA food-grade standards to eliminate contamination risks from the source. During production, all fabrics are cut using ultrasonic cutting technology, which effectively avoids fraying and dust issues caused by traditional cutting methods and ensures material cleanliness. Most importantly, all sewing processes for high-hygiene products are completed in a dust-free workshop that meets the ISO22000 Food Safety Management System standards, equipped with professional dust removal equipment for full-process control of the production environment. We solemnly promise that every FIBC leaving our factory undergoes strict disinfection, ensuring it is hygienic, dust-free, and free from any impurities or contaminants, making it a reliable choice for all packaging needs that demand high hygiene standards.
FDA food-grade compliant polypropylene — zero contamination from source
Eliminates fraying and dust — ensures clean, precise material edges
Professional dust removal equipment for full-environment production control
Every bag is hygienically disinfected — dust-free, impurity-free, contaminant-free
Step inside our two modern production bases in Yantai — 60,000 m² of advanced manufacturing capability, lean management, and precision engineering.
ZS Bulk Bags operates a fully integrated production system covering raw material procurement, manufacturing and processing, and final delivery. Leveraging our continuously innovative technologies and stringent quality management system, we ensure precision, efficiency, traceability and full controllability across every stage of production.
We always place product quality and hygiene safety at the forefront, and adhere to stable and high-quality production standards — a commitment that secures our sustained core competitiveness in the industry.
Learn More About Us
Additional production environment and product quality showcase from our Yantai facilities.
With a robust export infrastructure and an experienced international trade team, ZS Bulk Bags delivers custom FIBCs efficiently to clients across North America, Europe, Southeast Asia, and beyond.
Serving established distributors and industrial clients in the USA, Canada, Germany, UK, and across the EU with full compliance documentation and on-time container delivery.
Strategic partnerships with buyers in Japan, South Korea, Australia, Vietnam, and Thailand — supported by flexible MOQs and rapid production lead times.
Full export documentation, marine insurance support, and partnerships with leading freight forwarders ensure your cargo arrives safely, on schedule, worldwide.
Our professional international sales team provides efficient bilingual support from inquiry to after-sales service — your dedicated account manager throughout the journey.
From single-run samples to 500,000-unit bulk orders, our production flexibility accommodates seasonal demand spikes and long-term supply agreements with ease.
Every order is fully traceable — from raw material batch numbers to final QC sign-off — ensuring complete supply chain transparency and compliance documentation.
Join 246+ global clients who trust Yantai ZS Bulk Bags for reliable, compliant, and cost-effective bulk packaging solutions. Send us your specifications and receive a tailored quote within 24 hours.
Zhensheng