# Seryn

> Seryn makes reusable cooling crates for fresh food in markets, on farms and in delivery vehicles, where there is no power at the point of use. The goal is less food loss and fewer emissions, in line with SDG 12.3, SDG 13, the Global Cooling Pledge and the Kigali Amendment. One crate takes three kinds of phase-change panel, charged at a local hub: Seryn Cool (12 °C) for chilling-sensitive produce such as tomatoes, avocados, mangoes and bananas; Seryn Chill (7 °C) for peppers, beans and citrus; Seryn Cold (2 °C) for leafy greens, herbs and flowers; customers rent by the day with mobile money or buy or lease fleets and unlock the crate with an SMS code.

Key facts: crate footprint 630 × 380 mm (standard produce crate); ≈ 12 kg payload; 32 mm polyurethane walls (U ≈ 0.6 W/m²K); cold panels in three versions (10 °C and 5 °C phase-change material, or water at 0 °C) in the same panel cases; 0 W where it is used; OpenPAYGo keypad tokens verified offline; temperature logged every 10 minutes. Thermal figures are modelled pending field measurements.

## Product
- [Seryn home](https://serynlabs.com/): the crate and the fleet offer, how charge-load-go works, climate benefits, uses (markets, farms, logistics, retail, food programmes), FAQ.

## Optional
- [Everything in one file](https://serynlabs.com/llms-full.txt): the home page as Markdown.