Ion exchange technology has a long history, and certain natural materials such as zeolites and sulfonated coals obtained by sulfonation with coal can be used as ion exchangers.
Macroporous strong acid cation exchange resin: 001x7, 201x7/205x7, 201x7, 001x4, 001x14, 005x7, D72, D61, D00.......
The so-called "in the fine and not more", the application of pesticides is also this reason, can not cause waste, so a series of programs have also been developed on the conservation of pesticides.
First, circulating spray technology
The conventional sprayer equip.......
Eggs are one of the best sources of human nutrition. For humans, eggs have excellent protein quality, second only to human milk. Eggs are rich in protein, fat, vitamins, calcium, zinc, iron, riboflavin, DHA and lecithin and other nutrients needed by the body. They .......
Melon is a vegetable with high nutritional value. It often eats melon in summer, which is very beneficial to human health, especially for obese people. Me.......
Snails are molluscs, gastropods. The snail not only harms the young shoots and leaves of the plants, but also causes the lack of seedlings and cuts, which is one of the important pests in agriculture.
First, the symptoms
When the back of corn snails occurs, there are cracks.......
First, heatstroke cooling. In summer, we should do a good job in preventing the heatstroke and reduce the weeds around the sheep house. Open the air convection window at the bottom of the south and north walls of the sheep house and strengthen the ventilation. The sun-facing surface of the.......
Buy chestnuts have tips, a look two pinch selection chestnut. At the end of autumn and winter streets, the smell of fried chestnuts can be heard from very fa.......
The danger of skipping breakfast for the child's body has been recognized by more and more people. Breakfast must eat, but at the same time also pay attention to how to eat, should not eat. Incorrect breakfast eating habits can also harm your health and take aw.......
The role of betel nut
1 insect repellent effect
Arecoline is an effective insect repellent ingredient. It has a strong cockroach effect on pork aphids, which causes all insects to paralyze, but it can only make the head and immature sections completely paralyzed by beef aph.......
Due to the backwardness of China's agricultural management methods, some farmers used illegal pesticides in the cultivation process.......
For mild diseases, measures should be taken in time. First check whether the fish has floating head and stop eating. If there is no floating head and no food, you can take the first use of sprinkling the topical medicine and then feeding the medicine. Otherwise, you must first take oxygen .......
The question of whether or not genetically modified plant and animal foods are good for health has been controversial. The "Sc