This document provides guidance on how to buy pre-painted galvanized iron (PPGI) from suppliers in China. It outlines the main end uses for PPGI, which determine the appropriate suppliers, including building materials, household appliances, solar energy sheets, doors and windows. For building materials, which have high volume and price sensitivity, it recommends private mills which can meet requirements for coating thickness and weight basis. For household appliances requiring high quality, it suggests state-owned mills like Baosteel/Handan Steel which will ensure coating and quality standards are met. The document stresses carefully evaluating suppliers on key criteria like coating, thickness, strength and surface quality to ensure a quality product.