华龙证券给予海亮股份买入评级，点评报告：美国铜关税政策大幅调整，公司在美布局、有望直接受益

Group 1 - The core viewpoint of the article is that Huayong Securities has given a "buy" rating for Hailiang Co., Ltd. (002203.SZ) based on recent changes in copper tariffs and the company's potential to benefit from these changes [1] - The significant change in Trump's copper tariff policy has excluded copper raw materials and scrap, leading to a sharp decline in copper prices [1] - Hailiang Co., Ltd. has copper processing capacity in the U.S., which is expected to directly enhance profits and benefit from the new copper tariff policy [1] Group 2 - Potential risks include slower-than-expected progress in North American copper pipe business, fluctuations in raw material prices, changes in tariff policies of major economies, geopolitical risks, and uncertainties in cooperation matters [1]