Nantong Guangyuan Chemical 南通广源化工
Direct manufacturer & exporter of research-grade compounds from Nantong, China
Company Profile
Nantong Guangyuan Chemical Co., Ltd. (GYC) is a professional manufacturer and exporter of peptides, SARMs, anabolic compounds, raw powders and related supplements. Based in Nantong, China, we offer direct factory pricing with comprehensive international logistics.
We've served thousands of customers across the US, Europe, Australia, and beyond. Our direct-from-manufacturer model means you get the best pricing without middlemen or resellers inflating costs.
Your Contact
Our dedicated sales representative is available 7 days a week to help with orders, product questions, and after-sale support.
Glisa
FastestOrders, custom synthesis, OEM partnerships, bulk pricing, and all enquiries.
Manufacturing Excellence
Our facility features GMP-standard production lines for peptide synthesis, tableting, and oil formulation. We handle everything from raw material sourcing to final product packaging, ensuring quality control at every step.
Quality Assurance
Every product we sell is independently tested by Janoshik Analytical — the most trusted independent laboratory in the research chemical industry. We don't just claim quality; we prove it with transparent, verifiable data.
99.5%+ Average Purity
Consistently verified across all products — peptides, orals, injectables, and raw materials.
Janoshik Test Reports
Every batch tested and documented. Full HPLC & mass spectrometry analysis by Janoshik Analytical.
Certificate of Analysis (COA)
A COA is available for every product we sell. Request it anytime — full transparency, no exceptions.
Certifications & Awards
Nantong Guangyuan Chemical (GYC) and our parent company hold numerous certifications and government-recognized awards — reflecting decades of pharmaceutical-grade manufacturing excellence.
Top Peptide Synthesis Solution in Asia — 2026
GYC was officially awarded the Top Peptide Synthesis Solution in Asia 2026 by Life Sciences Review (ISSN 2831-8331), a globally authoritative media outlet, in recognition of its profound technological expertise, unwavering commitment to quality, and outstanding global service capabilities in the field of peptide synthesis.
上海市科学技术进步奖 · Third Prize · 2008
A prestigious government science award granted by the Shanghai Municipal People's Government. Awarded for the project "New Process for the Cyclic Peptide Drug Eptifibatide" — recognizing a breakthrough in cyclic peptide manufacturing that improved synthesis efficiency and yield for this critical antiplatelet drug.
质量管理体系认证 · Certified by SGS
The international gold standard for quality management systems. Issued by SGS — the world's largest inspection, verification, and certification company. This certifies that every stage of production, from raw materials to final product, follows documented, audited quality procedures.
职业健康安全管理体系认证 · GB/T 28001
An internationally recognized workplace safety standard. This certification proves the facility maintains rigorous health and safety management systems to protect workers — a requirement for responsible pharmaceutical manufacturing and chemical handling operations.
环境管理体系认证 · GB/T 24001 · Issued by CAC
The global standard for environmental management. Certified by CAC (China Quality Certification Centre), this confirms the facility meets strict environmental protection requirements — including proper waste disposal, emission controls, and sustainable manufacturing practices for chemical production.
药品生产许可证 · Valid through 2025
An official government-issued license required to legally manufacture pharmaceutical products in China. Issued by provincial FDA-equivalent authorities, it certifies the facility meets GMP (Good Manufacturing Practice) standards for producing Active Pharmaceutical Ingredients (APIs). Only facilities that pass rigorous government inspections receive this license. GYC's Binhai subsidiary also holds its own separate Pharmaceutical Production License.
药品生产许可证 · Binhai (滨海)
A separate Pharmaceutical Production License held by GYC's Binhai subsidiary. This confirms the company operates multiple GMP-compliant production facilities — expanding manufacturing capacity while maintaining the same strict government-regulated quality standards across all sites.
上海市专利工作试点企业 · 2014
A title awarded by the Shanghai Intellectual Property Bureau to companies demonstrating exceptional patent activity and innovation. This recognizes GYC's strong portfolio of proprietary peptide synthesis technologies and original pharmaceutical research — showing the company actively develops and protects its own intellectual property.
高新技术企业证书 · National Level · 2017
A highly selective national-level designation jointly administered by China's Ministry of Science & Technology, Ministry of Finance, and State Taxation Administration. Companies must demonstrate significant R&D investment, proprietary intellectual property, and cutting-edge technological capabilities. Only ~7% of applicants qualify — confirming GYC operates at the frontier of pharmaceutical science.
上海市科技小巨人企业 · 2018
An elite designation from the Shanghai Municipal Commission of Science and Technology, awarded to fast-growing technology companies with exceptional innovation capability and market competitiveness. "Little Giant" enterprises are recognized as future industry leaders — companies that punch far above their weight in technological output relative to their size.
创新型企业 · 2012
Awarded jointly by Shanghai's Commission of Economy and Information, Commission of Science and Technology, and Finance Bureau. This government-backed title recognizes enterprises that have built innovation into their core business strategy — with proven track records of developing novel products, processes, and technologies in pharmaceutical chemistry.
Buyer Protection
100% Delivery Guarantee
If your package is seized or lost in transit, we reship at no extra cost — no questions asked. We've maintained this policy since day one.
60-Day Refund Policy
Not satisfied? Choose a full refund, free replacement, or 110% store credit. We stand behind everything we sell.
Secure Payments
256-bit encrypted checkout supporting Visa, Mastercard, Apple Pay, Google Pay, bank transfer, and cryptocurrency.
Discreet Packaging
Plain, unmarked packaging with no product labels, company branding, or identifiable markings.
Product Categories
Peptides
180+ productsGLP-1 agonists, growth hormones, healing compounds, blends, bioregulators
Oral Tablets
80+ productsSARMs, anabolics, PCT support, nootropics, weight loss
Injectable Oils
70+ productsTestosterone, trenbolone, nandrolone, specialty blends, lipo formulations
Raw Materials
30+ productsBulk powders for manufacturing
Why Choose GYC?
Direct Manufacturer
No middlemen, best factory pricing
Janoshik Tested
99.5%+ purity verified by Janoshik Analytical. Janoshik test reports.
350+ Products
Comprehensive catalog
Worldwide Shipping
Reliable international logistics
Buyer Protection
100% delivery guarantee, free reshipping, easy refunds
Bulk Discounts
Volume pricing available
Community Presence
GYC is openly discussed and reviewed across major research forums. Read real customer experiences:
Ready to Order?
Explore our complete range of 350+ research compounds or get in touch with our team for custom orders and bulk pricing.