In its latest survey of practices among makers of electronic gadgets, Greenpeace has raised the bar of what the environmental group believes is required for "green" corporate citizenship.

The analysis of the products and procedures of 18 major electronics manufacturers released Wednesday ranked two Silicon Valley giants - Hewlett-Packard and Apple - in the middle of the pack. Handset maker Sony Ericsson topped the list, while video game company Nintendo finished last.

The full report is at www.greenpeace.org.