Renovation and more: the 8th Beijing Family Fair in March will giv…

The foreline pump is a vacuum pump used to maintain the pressure at the anterior stage of a vacuum pump below its pre-critical pressure level. Such as Roots pump configuration before the rotary vane pump or pump is the forefront pump. Use of the foreline pump: The term forepump in the vacuum un…

Although we have seen many materials designed to remove oil from water, many of them quickly become saturated and must be discarded. However, a new reusable membrane developed by scientists at Kobe University in Japan solved this problem by repelling …

1, fat addition and feeding effect Thii China Feed Industry Information Network - based on feed, service animal husbandry

Add 2% to 3% to the piglet feed, increase the weight gain by…

International fastener products have two sets of relatively independent standard systems of metric and imperial standards. The metric standard is the European standard system, which is based on the international ISO, the European Community EN standard and the French DIN standard. The America…

The floor-to-ceiling windows on the balcony are very straightforward and very intuitive, and at first glance it is easy to catch your eye. It is good lighting and a wider field of vision. Whether it is the living room or the bedroom, if you choose this kind of window, the inte…

The hardware standard parts are standard parts made of metal. The following introduces the concept and classification of common hardware standard parts.

1. Bolt:

A type of fastener consisting of…