Research-Grade Compounds
Factory Direct Σ
350+ Janoshik-tested peptides, SARMs, injectables & raws manufactured in Qingdao (青岛), China — shipped from local warehouses in the US, UK, Canada, EU & Australia.
Secure Payment Methods
Inside Our Lab
See our Qingdao manufacturing facility and quality control process in action
50+ Dedicated Staff
Our team of scientists, quality engineers, and logistics specialists work together to deliver 350+ research compounds with 99.5%+ average purity. Based in Qingdao, China, we handle everything from synthesis to packaging to worldwide delivery.
Trust & Quality 品质信赖
Independently verified and trusted across leading research forums
Janoshik Analytical
Every batch independently tested — 99.5%+ purity via HPLC & mass spectrometry. Full COA available.
View Test ReportsMade-in-China Verified
Verified vendor with customer ratings and reviews on Made-in-China marketplace.
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How It Works
Simple 5-step ordering process
Browse & Order
Choose from 350+ products and add to cart
Secure Payment
Pay with card, crypto, or bank transfer
Processing
Quality-checked and packed within 24 hours
Tracked Shipping
Worldwide delivery with full tracking
24/7 Support
Post-delivery assistance always available
Frequently Asked Questions
Qingdao Sigma Chemical Co., Ltd. (QSC) is a manufacturer & supplier based in Qingdao, China. We produce and supply 350+ research-grade compounds including peptides, tianeptine, HGH, SARMs, nootropics, injectable oils, oral tablets, and raw materials. All products are independently tested by Janoshik Analytical with certificates of analysis (COA) available. We are a Made-in-China verified vendor.
All orders must be placed through our website. Browse our products page, add items to your cart, and proceed to checkout. Fill in your shipping details, then choose your payment method — we accept Visa, Mastercard, Apple Pay, Google Pay, Revolut, bank transfer, or cryptocurrency (BTC, ETH, USDT, USDC, SOL, XRP, LTC, BNB). Crypto payments receive a 10% discount. For questions or support, message us on Telegram.
Standard shipping: $25 worldwide with full tracking — 7-15 business days from our Qingdao, China warehouse. We ship to all countries with discreet packaging.
Express Priority shipping: $50 — fully tracked via USPS Priority Express (US), Royal Mail Special Delivery (UK), DHL Express (EU), and equivalent priority couriers worldwide.
We accept Visa, Mastercard, Apple Pay, Google Pay, Revolut, and bank transfer through our secure, PCI-compliant payment processor. You pay the exact USD amount shown — your card is charged in dollars just like any regular online purchase. We also accept cryptocurrency (BTC, ETH, USDT, USDC, SOL, XRP, LTC, BNB) with 10% off your order. All payments are processed through 256-bit encrypted channels and your card details are never stored by us.
Every product is independently tested by Janoshik Analytical — the industry's gold standard laboratory for purity and potency verification. Our products consistently achieve 99.5%+ purity, confirmed via HPLC and mass spectrometry analysis. We have Janoshik verified test reports with full certificates of analysis (COA) that you can view here. We are also a Made-in-China verified vendor.
Yes! We offer automatic volume discounts on most products (shown on each product card), plus our Early Spring Sale tiered discounts:
• Orders $500+ — 5% OFF + Free Express Shipping
• Orders $1,000+ — 10% OFF
• Orders $2,500+ — 20% OFF
For institutional or wholesale orders, contact us on Telegram for custom pricing.
We offer a 100% delivery guarantee. If your package does not arrive, we reship your entire order at no cost. Specifically:
• Customs seizure: We reship immediately upon receiving the seizure letter
• Lost packages: If tracking shows no update for 30+ days, you get a free reship or full refund
• Damaged goods: Full replacement shipped at our expense
Your purchase is always protected.
Yes, we offer OEM services and custom synthesis for bulk orders. We can accommodate custom formulations, dosing, packaging, and labeling. Contact us on Telegram or email support@qingdaosigmachemical.com to discuss your specific requirements and receive a quote.
Telegram: Message our team — fastest response, typically within minutes during business hours
Email: support@qingdaosigmachemical.com — response within 1-24 hours
We provide pre-sale support, order tracking, and post-delivery assistance. For urgent matters, Telegram is strongly recommended.
We never ask you to return products. For any quality issues:
• Full refund to your original payment method
• Free replacement shipped at our cost
• Store credit at 110% value (bonus 10%)
Claims can be filed within 60 days of order date. We require minimal evidence — usually just a photo. We stand behind every product we sell.