How to classify pesticides?

There are many varieties of pesticides. So far, there are more than 1,500 kinds of registered countries in the world, of which more than 300 are commonly used. For research and ease of use, pesticides are often classified from different angles. There are many ways to classify it, and the main ones are the following three.

(1) According to the main use, there are insecticides, acaricides, rodenticides, molluscicides, fungicides, nematicides, herbicides, plant growth regulators, and the like.

(2) According to the source classification, it can be divided into three categories: mineral source pesticides (inorganic compounds), biogenic pesticides (natural organic substances, antibiotics, microorganisms) and chemical synthetic pesticides.

(3) There are dozens of chemical structure types of organic synthetic pesticides classified according to chemical structure. The main ones are: organophosphorus (phosphine), carbamate, pyrethroid, organochlorine compounds, organic sulfur compounds, amides. a compound, a urea compound, an ether compound, a phenol compound, a phenoxycarboxylic acid, a triazine, a diazobenzene, a benzoic acid, an anthracene, a triazole, a heterocyclic ring, a coumarin, Organometallic compounds and so on.

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Beaded type Galv. Malleable Iron Pipe Fittings

with BS threads

Advantage:

1. Middle Weight        - fig no.90 elbow 1/2" 75g

2. High Qaulity          - good two times baked galv.

3. Size                 - 1/2"-6" available

4. package - by cartons or bags, without or without pallets

5. Fast delivery - Auto-production line

6. Made in China       ISO9001-2008 certificate

7. Brand: INQO brand, China brand, MAK Brand, OEM available

Package and delivery

4 small box in one big carton on the strong plywood pallet

Inner with plastic bags protect water steam

Spcecial cartons for customer

For dubai market                    for syria market              for africa market

FAQ:

1. What is the hot dipped galv. Manufacturing process:

Answer: Firstly, we put raw Material 0# zinc ignot into electric melt stove at a high temprature

of around 840 Â°F (449 Â°C), when the zinc ignot is melted into zinc water, then put the fittings into

zinc water for 5 seconds, then shake it, then take out and put it into cold water for 5 seconds. .

2. What is the advantage of hot dipped galv.

Answer: Hot dipped galv. Fittings are with more thick zinc coating, the zinc coating is 400g/um,

It is with high corrosion resistance, not easy to be dropped off, the usage-life can be for 40 years.

3. What is the two times baked galv. Manufacturing process

1.Casting     2. semi-products   3.sand washing 4. first baked galv.

5. auto-threading    6 second baked galv. 7. Quality Control

4. What is the advantage of two times baked galv.

A.      Two times baked galv.   Inside and outside, both is with zinc coating

B.      Surface is beautiful, without little dark, zinc coating more strong

C.       Like hot dipped galv. But price is much cheaper thanHot Dipped Galv

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Hebei Lanwei Imp. & Exp. Co., Ltd. , http://www.hblanwei.com