Graphene is a single layer of carbon atoms and has desirable properties for a variety of applications. In the past decade, graphene is the most popular material. In 2017 alone, more than 30,000 research papers on graphene were published worldwide. For example, the most anticipated graphene solar cells. The most advantage of graphene as a material for batteries is that the conduction is extremely fast. But it has some disadvantages that limit its application to graohene solar cells. Happily, scientists had create a new nanomaterial contains graphene that makes graphene solar cells feasible.

Recently, the global tungsten market has seen a scene of rise and fall. On the one hand, the price of ammonium paratungstate(APT) continues to highly rise up. On the other hand, the price of tungsten concentrate is cooling and weak. In order to trace this wired phenomenon, people have turned their attention to the world's most important tungsten production center - Ganzhou, Jiangxi, where the region is conducting more stringent environmental inspections.

The focus of attention is that US President Trump announced his withdrawal from the Iran Nuclear Dear and restarted economic sanctions against Iran. Due to this, the international oil price had risen again and hit a new high in the past three years.

Nanomaterials refer to materials whose dimensions reach the nanometer scale in one-dimensional, two-dimensional or three-dimensional direction. It can be divided into zero-dimensional materials, one-dimensional materials, two-dimensional materials, and three-dimensional materials. When a conventional material reaches the nanometer scale, its properties will be greatly different from usual.