Despite improvements, working conditions are still a sore point in China -- and China Labor Watch wants to emphasize that no company is exempt from scrutiny. The rights advocacy group claims that, on top of pushing mandatory overtime and poor overall conditions, Samsung contractor HEG Electronics has allegedly been employing at least seven underage workers at a Huizhou plant making phones and DVD players. Not surprisingly, Samsung has been quick to defend itself, asserting that it found "no irregularities" in two separate inspections this year and t