[cflsystems]

Try this

1. The extra field name is "tech"
2. The language variables names are "technology", "tech", "technical"
3. You enter just that text for appropriate products - tech, technology, technical or leave empty
4. When showing extra fields loop through them and if servoce_name=tech show {$lng.`$field.value`}

Now this is not tested so it may not work
You can also just say
if service_name=tech
if filed.value=tech show THIS
elseif field.value=technology show THAT
etc...