A Chinese paramilitary policeman stands guard as a truck with a North Korea license plate drives on the Friendship Bridge over the Yalu River which connects North Korea's Sinuiju to China's DandongWith the aid of Ben Blanchard DANDONG, China (Reuters) – China has stepped up checks on shipments to and from North Korea nearly two months after agreeing to new U.N. sanctions that demand larger scrutiny of change, however the glide of goods in and out of the reclusive state seems generally unaffected. The sanctions had been imposed after North Korea's third nuclear check on February 12. China has said it desires the measures enforced, however few analysts consider Beijing will take steps that hurt North Korea as it’s dedicated to a policy of engagement. …