Contact GYC
Get in touch with our team for orders, inquiries, and support
Official GYC Representative
Lisa
Official RepSales Director & Sole Official Representative
Lisa handles all orders, wholesale enquiries, custom synthesis, OEM partnerships, bulk pricing, shipping updates, and after-sale support. She is the only official GYC representative — do not trust anyone else claiming to represent GYC.
Security Notice: Lisa is the only official GYC representative. She manages all Telegram, WhatsApp, and email communications. If someone else contacts you claiming to be from GYC, it is a scam. Always verify you are speaking to @glisa_888 on Telegram or +1 (725) 243-9104 on WhatsApp.
Buyer Protection
100% Delivery Guarantee
Package seized or lost? We reship at no cost — no questions asked.
60-Day Refund Policy
Full refund, free replacement, or 110% store credit within 60 days.
Secure Payments
256-bit encrypted. Visa, MC, Apple Pay, Google Pay, Bank Transfer, Crypto.
Discreet Packaging
Plain, unmarked — no labels or branding visible.
Shipping Information
Nantong, China
7-15 business days worldwide
$25 worldwide with tracking
$50 — fully tracked via USPS, Royal Mail, DHL, etc.
Our Services
OEM Service
Custom manufacturing for bulk orders
Janoshik Testing
Third-party analytical verification
Bulk Discounts
Volume pricing for institutions
Custom Synthesis
Bespoke compound formulation