An HVAC control system is used for regulating the temperature, humidity, and airflow within a building to provide thermal comfort to occupants. HVAC systems ensure enhanced air quality in residential and commercial establishments through ventilation and filtration, thereby ensuring thermal balance. These systems use heat exchangers, pumps, and fans to control and regulate humidity and temperature levels. 

The report focuses on HVAC air filters that comprise the majority share of the overall air filter market. Declining IAQ has been a major factor influencing the use of air filters in HVAC. Poor IAQ leads to health problems and affects the productivity of the building's occupants. This concern has not only accelerated the use of HVAC systems but also increased the demand for more efficient air filters.   

In this report, Technavio covers the present scenario and growth prospects of the global construction scaffolding rental market for 2017-2021. To calculate the market size, we considered the revenue generated from scaffolding rental across the globe in 2016. Market values have been forecast by using hybrid forecasting techniques wherein a basket of macro-economic indicators and market opportunities were analyzed to arrive at the forecast figures.The report also presents the vendor landscape and a corresponding detailed analysis

of the top five vendors in the market, as well as a brief description of the other prominent vendors. In addition, the report discusses the major drivers influencing market growth and the challenges faced by the vendors and the market. It also examines key emerging trends and their influence on current and future market scenarios.

5 月份，钢铁行业产销双双放缓，且投资延续回落态势。1~5月，全国粗钢产量 3.47亿吨，同比增长 4.4% ；钢材产量4.5亿吨，同比增长0.8%；钢材表观消费量4.25亿吨，同比增长1.81%；钢铁行业完成固定资产投资 1274.25 亿元，同比下降 11.0%。5 月，钢材综合价格指数为 99.27 点，环比上涨 7.16%。 

短期来看，2017 年 6 月 30 日是地条钢“大限”，地条钢 1.19 亿吨产能有望全部出清；地条钢出清释放的废钢供给将使我国废钢供需关系趋于平衡；根据我们的测算，假设地条钢产能利用率为 50%、中频炉出钢率为 90%、 2017 年我国废钢供给量增长 9.9%、全国长流程炼钢废钢比为 15%，短流程炼钢废钢比为 100%、以及 2017 年全国粗钢产量增长 2%等条件，则预计在地条钢出清后，2017 年我国废钢供给总量将达 1.67 亿吨。

6 月 5 日~6 月 9 日，机械行业指数上涨 2.90%，沪深 300 上涨 2.57%。其 中工程机械指数上涨 3.82%，机床工具指数上涨 5.60%、重型机械指数上 涨 2.45%、铁路设备指数下跌 0.00%、军工指数上涨 3.26%、造船指数上 涨 1.98%、通用机械与零部件指数上涨 4.39%、节能减排设备指数上涨 3.32%、石油天然气设备指数上涨 1.55%。除重型机械、铁路设备、造船、 石油天然气设备外，机械行业整体和其余细分板块均跑赢沪深 300

The growth of the hydraulic manifold market in the UK is driven by the growth of the earthmoving equipment and the construction markets in the country.Hydraulic manifolds for loaders is the largest and the fastest growing segment among earthmoving equipment, closely followed by the construction tractor segment.Replacement of dated earthmoving equipment or component is one of the major factors driving the growth of the hydraulic manifold market in the UK.Changing customer requirements is one of the major challenges faced by the

hydraulic manifold manufacturers in the UK.With the increased adoption of compact earthmoving equipment, there is a rise in demand for compact hydraulic manifolds. Moreover, it is highly likely that during the forecast period, the demand for lightweight and echnologically advanced hydraulic manifolds will also increase.This report covers the present scenario and growth prospects of the hydraulic manifold market in the UK for 2016-2020.

本周 2017 年一季度数据公布，建筑行业 GDP 增速 5.3%，连续4 季度下行，创 2002 年以来的新低。水泥的生产量也连续三个月出现负增长。同时汽车销量增速也触顶回落。综合来看，2017年的钢材下游消费数据整体较为疲软，低于市场预期。

上周全国 163 家样本钢厂盈利面大幅下降12.89 个百分点至 72.39%，河北 72 家样本钢厂盈利面大幅下降 24.66 个百分点至 57.53%。3 月以来钢材吨钢毛利平均下降 400 多元。供给压力渐显。1-3月全国粗钢产量同比增 910 万吨，粗钢净出口同比减少 783 万吨，一季度国内粗钢供给量同比增加 1693 万吨，增幅 10.2%，是确定消化不掉的。前期市场尤其是钢贸商预期太高，使得淡季不淡，而进入旺季需求并未全部兑现，尤其是制造业用钢。我们预计一季度业绩为高点，二三四季度环比下降。

近期上市公司业绩超预期的个股频出（伊之密、龙马环卫、先导智能等等），且原油价格正如我们预期一样的强势反弹。站在目前时点看机械行业，预期偏低的周期股和有预期差的成长股将在 2 季度仍将持续表现。