Premium Chemical Manufacturing Since 1979
We are proud to produce and provide top-quality chemicals for over 40 years. ISO9001:2015 certified manufacturer with global reach and consistent quality.
Explore Our ProductsThis page is not the official website. Generated by AI, does not constitute any advice. If needed, please click here to visit the corresponding official website.
We are proud to produce and provide top-quality chemicals for over 40 years. ISO9001:2015 certified manufacturer with global reach and consistent quality.
Explore Our ProductsLongkey, originally founded as “Jinhua Ranliao” in 1979, has evolved into a leading chemical manufacturer with over four decades of experience. We specialize in producing high-purity industrial, food-grade, and specialty chemicals for global markets.
With two advanced production plants in Zhejiang and Ningxia, China, and a total facility area of 122,800 square meters, we ensure scalable, reliable, and ISO9001:2015-certified manufacturing processes.
Years of Excellence
Advanced Plants
Certified Quality
Distribution
EDTA-4Na – High Purity Chelating Agent
Factory founded as “Jinhua Ranliao” – the beginning of our legacy in chemical manufacturing.
Factory restructured to modernize operations and expand production capabilities.
Annual output exceeds 1 billion RMB, marking a major milestone in growth.
“Sunway” trademark registered, strengthening brand identity in global markets.
New large-scale plant established in Ningxia with flexible, multi-purpose production lines.
State-of-the-art plant rebuilt in Zhejiang, enabling complex formula production.
Implemented comprehensive protection measures during the pandemic, ensuring staff safety.
Our dual-plant infrastructure ensures scalability, flexibility, and consistent quality across all product lines.
Advanced digital sensor and pipe management systems ensure precise control over every reactor and pipeline, eliminating defects and ensuring batch consistency.
Each facility is equipped with a fully functional R&D laboratory, enabling development from milligrams to tons. Our team of highly educated chemists collaborates with Zhejiang Tech and Industry for continuous innovation.
High-purity chemicals for industrial, food, mining, and pharmaceutical applications.
CAS: 13254-36-4 (tetrahydrate), 64-02-8 (Dihydrate)
Tetrasodium salt of EDTA, used as a chelating agent in industrial and water treatment applications.
CAS: 11138-66-2
High-performance thickener and stabilizer used in food, cosmetics, and oil drilling.
CAS: 139-33-3 (Anhydrous), 6381-92-6 (Dihydrate)
Disodium salt of EDTA, widely used in food, pharmaceuticals, and detergents.
CAS: 9005-38-3
Natural polysaccharide used in food, pharmaceutical, and textile industries.
CAS: 53378-51-1
Mining reagent used as a collector in flotation processes for sulfide ores.
CAS: 5949-29-1 (Monohydrate), 77-92-09 (Anhydrous)
Versatile organic acid used in food, beverages, and cleaning products.
CAS: 59-30-3
Essential vitamin used in dietary supplements and fortified foods.
CAS: 9003-05-8
Water-soluble polymer used in wastewater treatment and oil recovery.
Years in Business
m² Plant Area
Production Plants
Products
Our standard lead time is two weeks from order confirmation.
We support FOB, CIF, and FCA terms for international shipments.
Our primary markets include the Middle East, Asia, South America, and Africa.
Yes, all production lines are certified under ISO9001:2015 with strict in-line quality controls.
We ship from Shanghai and Qingdao ports in China.
For inquiries, quotes, or technical support, please visit our official website.
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