Hints and tips:
...PLA research group, the Beijing Institute of Tracking and Telecommunications, went further....
...Last year, the US Justice Department issued indictments against five PLA officers for hacking American businesses, including Westinghouse and US Steel....
...Polylactic acid (PLA) and other starch-based polymers from sugar cane, potatoes, corn and wheat have emerged as the likeliest packaging materials, and worldwide renewable polymer production increased from...
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