About Our Company
Shandong Haojie Shuanglong Waterproof Material Co., Ltd., operating under the QINGYUAN Waterproof brand, is a comprehensive waterproofing enterprise integrating research and development, manufacturing, sales, technical support and construction services.
With advanced automated production lines and professional testing facilities, we manufacture a wide range of waterproofing materials, including SBS and APP modified bitumen membranes, self-adhesive waterproof membranes, PVC and TPO membranes, high-polymer waterproof membranes, waterproof coatings and specialized materials for infrastructure projects.
Our products are widely used in industrial buildings, residential and commercial construction, roofing systems, basements, tunnels, bridges, rail transit, airports and water conservancy projects. Through strict quality control, stable production capacity and responsive technical service, QINGYUAN Waterproof provides reliable waterproofing products and customized solutions for customers worldwide.
About Us
At QINGYUAN Waterproof, we believe that reliable waterproofing begins with professional manufacturing, strict quality management and a thorough understanding of construction requirements.
From raw-material inspection and production monitoring to laboratory testing and finished-product evaluation, every stage is carefully controlled to ensure stable performance and consistent quality. Supported by advanced production equipment, an ISO 9001 quality management system and an experienced technical team, we continuously improve our products to meet the needs of different climates, construction environments and engineering applications.
As a trusted waterproofing material manufacturer and solution provider, we serve distributors, contractors, construction companies and project developers in domestic and international markets. Guided by integrity, innovation and customer-oriented service, we are committed to building long-term partnerships and delivering durable, efficient and dependable waterproofing solutions for every project.
Factory Tour | A Behind-the-Scenes Look at Manufacturing
Covering an area of 80,000 square meters, we employ over 200 skilled workers.
Our factory is equipped with advanced automated production lines to ensure high efficiency, consistent quality, and large-scale supply capabilities.
Automated Production Lines
TPO membrane production line
PVC membrane production line
SBS/modified bitumen production system
Automated mixing, extrusion, and coating systems
From raw materials to finished products, every stage of the manufacturing process is strictly controlled to ensure stable performance and durability.
Quality Control & Testing Facilities
We have established a complete quality inspection system, including:
UV aging test chamber
Heat aging chamber
Tensile strength testing machines
Material rheometers and microscopes
On-site construction simulation test areas
Each batch is traceable through our sample retention system, ensuring quality consistency and accountability.
R&D Team | Innovation Driven Waterproofing Technology
Professional R&D Team
QINGYUAN Waterproof has a dedicated R&D team with experienced technical engineers focusing on:
● Waterproof material innovation
● Modified bitumen membrane development
● Polymer membrane and coating optimization
● Performance improvement for diverse construction environments
Innovation & Technology Strength
● 15+ years of industry experience in waterproof materials
● Equipped with advanced automated production lines and professional laboratory testing facilities
● Continuous product upgrades for stable quality, durability and diverse engineering applications
Contact Us
We would love to speak with you.
Feel free to reach out using the below details.