In a report issued Wednesday, a group of nongovernmental organizations accused the technology giant of violating its own corporate responsibility standards by using suppliers it said its investigations found are violating the law and endangering public health by discharging heavy metals and other toxins.

Taiwan-based notebook maker Pegatron Technology is estimated to have landed orders for 15 million iPhone 5s (iPhone 4S) from Apple and is set to start shipping in September of 2011, according to sources from upstream component makers. In response, Pegatron declined to comment about its cooperation with clients.