When farmers are controlling pests and diseases, they always pay attention to the interval between the use of vegetables before they go on the market, so that pesticide residues are excessive. The China Pesticides Network Xiaobian now introduces the rational use standards for pesticides commonly used in vegetables in the Ministry of Agriculture's pesticides. The following is for reference:
First, the acaricide 50% bromo oxime ester emulsifiable oil safety interval of 14 days; 50% Tolk WP powder pesticide safety interval of 7 days.
Second, insecticide 10% fenprofen emulsifiable oil 2-5 days; 2.5% bromomethrin 2 days; 2.5% kungfu emulsifiable oil 7 days; 5% to Fuling emulsifiable concentrate 3 days; 5% anti-Pu Wei WP 6 days, 1.8% Aifu factory emulsifiable oil 7%; 10% fast killing enemy emulsifiable oil for 3 days, 40.7% lesbian emulsifiable oil for 7 days; 20% for eliminating emulsified emulsifiable concentrate for 3 days, 20% fenvalerate emulsifiable safe interval 5 Day; 35% thiophene phase 7 days; 20% fenpropathyl emulsifiable oil safety interval 3 days; 10% mazonic emulsifiable oil safety interval 7 days; quetiaphos 25% emulsifiable oil safety interval 9 days; The safety interval of 50% anti-Pu Wei WP is 6 days; the safety interval of 5% Duobao WP is 7 days.
Third, fungicide
75% chlorothalonil WP can be used 7 days before the market; 77% can kill WP 3-5 days; 50% phlegm WP WP 4-7 days; 70% thiophanate-methyl WP 5-7 days; 50% Nongliling wettable powder 4-5 days; 50% Garry 58% Ruidu Lei manganese zinc wettable powder 2-3 days; 64% antivirus WP wettable powder 3 to 4 days.
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Duplex Steel Flanges Specification:
Grade :F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61, UNS S31803, UNS S32205.
Standard : ASTM A182 / ASME SA182
Size : 1/8″ NB TO 24″ NB
Dimensions : ANSI/ASME B16.5, B 16.47 Series A & B, EN-1092, BS4504, BS 10, B16.48, DIN, etc.
Types : Weld neck Flanges (WNRF), Slip-on Flanges (SORF), Blind Flanges (BLRF), Lap Joint Flanges (SOLJ), Socket-weld Flanges (SWRF), Screwed (Threaded) Flanges, Long weld neck Flanges (LWNRF), Spectacle Blind Flanges Spacer & Blind Flanges, Ring Type Joint Flanges (RTJ), Reducing Flanges, Raised Face (RF) Flanges, Orifice Flanges, Large Diameter Flanges, Custom Flanges, Drawing Flanges, Forged Flanges, Plate Flanges, Flat Face Flanges, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, API, EN Flanges etc.
Class / Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#. PN6, PN10, PN16, PN25, PN40, PN64 etc.
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