SPECIAL FEATURE: adviser.

Byline: Hannah M. Muralla

It's no longer surprising to see tech firms rushing to be green. Electronic companies, in particular, are taking steps to ban polivinyl chloride (PVC) and brominated flame retardants (BFR) from their manufacturing processes. PVC, a cheap yet durable plastic widely used in device casings, is built from carcinogenic and nonbiodegradable materials, while BFR, used to prevent plastics from catching fire, have toxic properties and have long been blighted as pollutants. Here's how tech firms have given their gadgets a green kick in recent years.

Sony Ericsson Green Heart

Sony Ericsson's eco-friendly brand, "GreenHeart," has as its pioneer model the C901, a …