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"From the domestic point of view, we will continue to encourage companies to enhance their innovation-driven growth ability, increase the contribution of scientific research and development to foreign trade, and raise production efficiency in a sustainable manner," said Gao.

"Governor LePage won't answer his door - we want to work!" organizers posted on Twitter, with photos and videos of dozens of the association's members holding placards and chanting.

"For example, big data analysis can help single out passengers, cargo and mailed items that are more likely to bring in or contain banned items," Zhu said. "More government investment is needed to spur technological research and utilization in entry-exit inspection and quarantine."

"Great Wall is poised to improve its annual sales volume for pickups from about 120,000 units to 200,000 units by 2020 and forge itself into China's first pickup brand as well as one of the world's top three," Ning said.

"Given that two accidents both involved the newly delivered Boeing 737-8 planes and happened during the take-off phase, they had some degree of similarity," China's Civil Aviation Administration said on its website, adding that the move was in line with the principle of zero tolerance for safety hazards.