Machines — Buy the Capability
Lab scanners and production sorters for PE, PP, and other polymer pellets: black specks, foreign contamination, and color defects — detected, counted, and automatically rejected at up to 1,000 kg/h.
View Machines →Optical Sorting & Inspection for Polymer Pellets
See Every Black Speck.
Sort Every Bad Pellet.
Optical inspection and sorting systems for polymer pellets — detect and reject black specks, contamination, and color defects down to 20 μm. Machines engineered by ZhongChuang (FOD Instruments), delivered and serviced worldwide by Gayan.
What We Do
Testing & Toll Sorting — Rent the Capability
Not ready to buy? Send us your pellets. Our Shanghai facility runs cleanliness tests on the same machines we sell — a full defect report within 5 working days. Need large volumes cleaned? We sort for you, by the ton.
Testing & Toll Sorting Services →Custom Online Solutions — Engineer the Capability
For extrusion and compounding lines, we design integrated online inspection: real-time defect detection, trend monitoring, and automated rejection — connected to your process.
Custom Solutions →Featured Machines
GA-25 Lab — Pellet Cleanliness Scanner
Lab-grade detection down to 20 μm — black specks, contamination, color defects, with full statistics and customizable reports. Unattended batch testing, 2–10 kg/h.
View Full Specifications →GS-1000 Pro — Pellet Cleanliness Sorter
Production sorting at up to 1,000 kg/h with automatic rejection — 3 × 8,192-px line-scan cameras, ≤25 μm detection, ≥95% sorting accuracy.
View Full Specifications →More models on request — tell us your throughput and defect requirements. Contact Us →
A Manufacturing Partnership, Not a Trading Company
Every Gayan machine is engineered and built by ZhongChuang (FOD Instruments), a Beijing-based manufacturer founded in 2018 and specializing in polymer testing instruments and optical inspection systems. ZhongChuang focuses on R&D and production; Gayan focuses on the world — multilingual support, export handling, and a test facility in Shanghai where your pellets meet the machines before you commit.
We exhibit together and support installations together. When you buy from Gayan, you get the factory behind you — and a partner in front of you.
Why buy through Gayan? →Why Buy Through Gayan?
Same price — factory pricing through Gayan
Our agreement with ZhongChuang guarantees it: going around us saves you nothing, and costs you the service.
Support in your language, in your time zone
Technical questions, spare parts, and warranty issues handled within 24 hours.
One accountable partner
From first quotation to final commissioning — you never chase two vendors in two languages.
Your Pellets. Our Machines. Real Numbers.
Ship us 5 kg of your material — PE, PP, or any polymer pellets. Within 5 working days you receive a contamination report, or watch a live-run video of your pellets being sorted on the GS-1000 Pro. No purchase required.