The recent rains in Fujian are favorable for summer crops.

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Linyi Fertilizer Network Copyright
It is reported that the current early rice, Spring peanuts and spring corn in Fujian Province are in the late harvest period; the double-season late rice is in the transplanting period. According to the forecast of the Fujian Provincial Meteorological Observatory: On the 27th, there were moderate showers or thunderstorms in Fujian Province, heavy rains in the three cities of Ganzhou, Xiamen and Quanzhou, and partial heavy rains. The rest of the cities had heavy rains and heavy rains. From the 28th to the 29th, there were showers or thunderstorms in the province, and heavy rains in the four cities of Longyan, Zhangzhou, Xiamen and Quanzhou, local heavy rains, and heavy rains and heavy rains in other cities. Linyi Fertilizer Network Copyright
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(1) It is expected that the province will be dominated by overcast rainy weather in the next three days. Among them, some precipitation in Zhangzhou, Xiamen, Quanzhou, Longyan and inland areas is strong, which is not suitable for the harvesting of early rice and other crops. Linyi Fertilizer Network Copyright
(2) It is expected that the next three days will be dominated by cloudy showers, and the soil moisture is better. It is suitable for late sweet potato cutting such as “rice-headed potato”, suitable for sowing soybeans and autumn peanuts. All localities should seize favorable opportunities and timely summer seeds; At the same time, it is suitable for transplanting double-season late rice in most areas, but in areas where heavy rain may occur, transplanting should be avoided during heavy rain. Linyi Fertilizer Network Copyright
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Tapping Screw

Although there are many types of tapping screws, they all have the following similarities:
(1) are generally made of carbonized carbon steel (accounting for 99% of total production). It can also be made of stainless steel or non-ferrous metals.
(2) The product must be heat treated. Carbon steel tapping screws must be carbonized and stainless steel tapping screws must be solution hardened. In order to make tapping screws to meet the requirements of the standard of mechanical properties and performance.
(3) The product surface hardness is high, the core toughness is good. That is, "soft inside strong outside". This is a major feature of tapping Screw performance requirements. If the surface hardness is low, it can not be screwed into the matrix; If the core toughness is poor, a twist will break, can not be used. So "inside soft outside steel" is self-tapping screw to meet the use of performance, very important requirements.
(4) The surface of the product needs surface protection treatment, generally electroplating treatment. Some product surface must be treated by phosphate (photostatting), such as wall panel self - tapping screws for photostatting.
(5) Production by cold heading process. It is recommended to use high-speed cold heading machine and high-speed wire rolling machine or high-speed planetary wire rolling machine. High speed is emphasized here to ensure product quality. Only the head of tapping screw produced by high-speed machine is well formed and the thread quality is high.

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