中美贸易战由短期施加压力反复试探转向中期实质性正面对抗，美方针对 “中国制造 2025”发展战略制造摩擦从而遏制中国崛起，从阶段性政治手段转向长期政策性战略。2018 年 6 月 15 日，白宫对中美贸易发表声明，对 1102 种产品总额 500 亿美元商品征收 25%关税， 7 月 11 日，美再次公布对价值 2000 亿美元的中国商品额外加征 10%关税的清单。2017 年化工及化工制品对美出口额为 1996亿美元，约占中国对美出口总额的 40%。同时，国防支出 2008-2017年复合增长率达到 11.9%，国防支出增速高于同期 GDP 增速，军工行业具有极高的壁垒，同时考虑到军品定价机制，原材料供应端的相关企业具有稳定增长的刚性需求支持以及较高的盈利水平。

After 17 straight profitable quarters, airlines based in the United States can be expected to keep the winning streak going in 2018 and beyond. Even as the industry’s two largest operating costs – fuel and labor – edge up, a combination of persistent demand for air travel that’s outpacing the overall economic growth and newfound discipline on adding capacity is keeping network and value carriers in the black. A return to growth in passenger yield – the measure of the average fare paid per mile per passenger – is an example of the industry’s enduring strength. After years in decline, year-over-year yield rose 2.3 percent in second quarter 2017, driven primarily by network carriers’ capacity restraint. Passenger yield fell 13.4 percent from 2014 through 2016, hitting a year-over-year quarterly low in third quarter 2016 of 13.4 cents. The systemwide yield by second quarter 2017 was 13.9 cents.

Latin America is one of the few regions in the world with significant natural resources and vast expanses of unexploited agricultural land. With the current scale of agricultural activities, the region stands as a key contributor to the world food supply, accounting for 16% of the global food and agriculture exports in 2016. The Latin America region is playing a pivotal role in global food supplies, with some countries registering respectable growth rates in agricultural productivity over the last few decades. Nevertheless, the increase in productivity trails food demand in the region and beyond. Brazil, Argentina, Mexico, and Chile are the major food exporters, contributing to annual food and agricultural exports of more than $100 billion.

Agricultural tractors are machines that are used for farming and other purposes in fields. It is an engineering vehicle specifically designed to deliver at a high tractive effort at slow speeds, for the purposes of hauling a trailer or machinery used in agriculture or construction. This report only covers agriclutural trators.

A wheelchair lift is a powered device - electric or hydraulic – that is used to raise a wheelchair with or without its occupant to overcome a vertical barrier. Depending upon on the end-user, a wheelchair lift can be categorized into two categories: Building wheelchair lift and vehicle wheelchair lift. The building wheelchair lift is installed at homes and commercial places for easy mobility of persons with disabilities, and it acts as an alternative to stairlifts. A vehicle wheelchair lift, on the other hand, is installed in public vehicles or private wheelchair accessible vans (WAVs) to increase accessibility of disabled people.

船舶推进方式是指船舶从原动机到螺旋桨的功率传输方式，可分为机械推进和电力推进两大类。电力推进根据不同维度可分为多种类型。根据电力推进方式占比可分为混合电力推进和全电力推进，根据电动机的布局位置可分为吊舱式和非吊舱式，根据推进负载与非推进负载的电力管理和分配方式可分为综合电力推进等。

中航工业直升机所于22日发布消息称，直升机“环控控制系统与机电综合管理系统”控制集成地面试验顺利通过验证，本次集成完成后，国产直升机产品控制设备数量将有所减少，显著降低了直升机机载重量，同时系统工作状态关键数据也将得到更加深入的把控，有利于维护人员及时准确地进行保养与维修。

5 月，新船订单量有所下滑，同比涨幅继续收窄，累计新船订单量达 1968 万载重吨，同比大幅增长 99.6%；新船交付情况保持向好，完工量环比继续上涨；受需求下降和交付量上涨影响，在手订单有所下降；基于成本上涨和汇率升值，新船价格轻微抬升；出口需求显著上涨，出口额累计同比实现正增长；船企经营持续低迷，主营收同比降幅再度扩大。