This feng shui thing is mysterious, but it is also based on science. For example, if you have such a situation around you, you have been uncomfortable for many years, your family has been plagued by disasters and plunged into poverty, and he is likely to have committed taboos in feng shui........

The new SKF roller sound monitoring device is a simple, rugged, hand-held monitoring device designed to detect belt roller failures. Conveyor belt rollers support the length of the conveyor belt and often result in damage to the conveyor belt and production downtime. Early detection of faul.......

At present, there are 35 mandatory national standards related to vegetables in China, involving 58 pesticide residue indicators and 52 pesticides. The names are as follows: parathion, malathion, methamidophos, phorate, monocrotophos, oxidation D.......

Spraying pesticides in summer is the best time at 9 am and 5 pm. At around 9:00 am, the general dew is dry and the temperature is not too high. It is the most vigorous time for sunrise pests to feed and mate. Therefore, at this time, the medicine will not be low.......