Qingdao Sigma Chemical 青岛西格玛化工
Manufacturer & supplier of research-grade compounds from Qingdao, China
Company Profile
Qingdao Sigma Chemical Co., Ltd. (QSC) is a professional trading and manufacturing company specializing in research peptides, tianeptine, HGH, SARMs, nootropics, and related compounds. Established in 2017 and based in Qingdao, Shandong Province, China, we offer competitive 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.
Official Registration Details
QSC is a legitimately registered Chinese trading & manufacturing company. Below are our verified business registration details.
青岛市市北区市场监督管理局 Taxpayer Status General VAT Taxpayer (增值税一般纳税人) Business Type Manufacturer / Factory + Trading Company (Hybrid) Annual Turnover RMB 10–50 million (≈ $1.4M–$7M USD) Employees 50–100 staff Certifications ISO 9001, GMP (self-reported) Main Markets USA, Canada, Australia, France, Germany + 100 countries
Addresses
Registered Address
Shandong Road 136, Jiahe Xinxing 1-1-1609, Shibei District, Qingdao City, Shandong Province, China
Office Address
Room 2804, Guangfa Financial Building, No. 40 Shandong Road, Shinan District, Qingdao, Shandong, China
Business Scope
Wholesale and retail of chemical products (excluding hazardous/dangerous goods), electrical equipment, mechanical equipment, computer accessories, auto parts, building materials, textiles. Includes technical services and consultation. Products include research peptides, tianeptine, HGH, SARMs, nootropics, and related compounds — all positioned strictly for research use only.
Our Team
Our team of 50+ professionals — including research scientists, quality control engineers, production staff, and logistics specialists — works together to ensure every product meets our strict quality standards before shipping worldwide.
Your Contacts
Our dedicated sales team is available 7 days a week to help with orders, product questions, and after-sale support.
Alisa Yang
Custom synthesis, OEM partnerships, bulk pricing, and all business enquiries.
Tracy
FastestOrders, product questions, after-sale support. Available on WhatsApp & Telegram.
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.
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 QSC?
Manufacturer & Supplier
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
QSC is openly discussed and reviewed across major platforms. 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.