METALS-London copper hits one-week top on steady China demand

(Adds comment, updates prices) By Melanie Burton MELBOURNE, April 3 (Reuters) - London copper climbed to the highest level in more than a week on Tuesday, supported by stronger-than-expected manufacturing growth in top metals user China. China's large state-owned manufacturers returned a solid report card for March as authorities lifted winter pollution restrictions and steel mills cranked up output with construction activity swinging back into high gear. The picture was not qui