Stainless Steel (Stainless Steel) is referred to as acid-resistant stainless steel, resistance of air, steam, water and other weak corrosive medium or stainless steel having resistance as stainless steel; and the resistance to chemical corrosion medium (acid, alkali, salt and other chemical leaching pitting) corrosion of steel known as acid-resistant steel. As the two differences in the chemical composition of leaving their corrosion resistance is different from ordinary stainless steel general impatience chemical corrosion, and acid-resistant steel are generally of a stainless steel.
So now stainless steel padlock with his unique quality, it won a lot of the market, particularly in Europe, is located in the cold zone countries.
About us
Shengping Safety Protection Locks Manufactur, create to set up in 1989, is an enterprise specialized in the manufacture of different kinds of locks. We have obtained quality system authentications as ISO9001-2000 International Quality Control System Attestation,and we have obtained self-operation export and import right etc. According to many years of producing and R&D experience, we produce locks more than 100 kinds of specification with different kinds of raw materials & styles. Moreover, we can do customized work as per clients`designs.
Bearing the sense of [quality gets victory", our products are popular in domestic market; and with the fame of our product`s [good quality and best prices", we have increased our export all over the world. Now our product lines are mainly for export.
We tightly hold the quality control system, follow the contract, and keep faith and valued mutual benefit. We sincerely welcome customers home and abroad and our craft brothers to develop and flourish the locks market.
Stainless Steel Padlock High Security Padlock Stainless Steel Padlock,Security Stainless Steel Padlock,Circle Steel Padlock,Disc Stainless Steel Padlock Shengping Safety Protection Locks Manufacturer , https://www.chinajiuzhou.com
When the iron deficiency tomato suffers from iron deficiency, the tip leaves are chlorotic, developing from the parietal lobe to the old lobe and with mild tissue necrosis. Preventive and remedial measures: In the tomato growth period or when iron deficiency is found in the plant, spray with 0.5% to 1% ferrous sulfate solution.
Boron deficiency tomato when the lack of boron, the most significant symptoms are chlorotic leaves yellow or orange, black growth point. When boron is severely depleted, the growing point withered and died. The leaflets of young leaves lost chlorosis between veins, with small patches, small leaves, and inward curls. The stems and petioles are fragile and easy to fall off the leaves. Roots grow badly brown. The fruit is deformed and the skin has brown stains. Prevention and remedial measures: In the tomato seedling, flowering, harvesting period or the discovery of plant boron deficiency, with 0.05% ~ 0.2% borax or boric acid solution foliar spray.
Manganese-deficient tomato lacks Mn, the leaves between the main veins of the tomato turn yellow, showing a macular shape, veins remain green, neonatal lobular necrosis; due to obstruction of chlorophyll synthesis, seriously affecting plant growth and development. In the absence of severe manganese, it cannot bloom and become strong. Prevention and remedial measures: During the growth period of tomatoes, plants were found to be deficient in manganese and sprayed with 1% manganese sulfate solution.
Zinc deficiency When tomatoes are deficient in zinc, the leaves at the top of the plants are small, the veins between the leaves lose light and the plants dwarf. The old leaves are smaller than normal, without losing the green, but there are irregular wrinkled brown spots, especially petiole. The petiole is curved backwards in a circle, and the damaged leaves quickly become necrotic and can completely wither and fall off within a few days. Prevention and remedial measures: In the tomato seedling stage, flowering period and early harvest, or when zinc deficiency is found in the plants, foliar spraying with 0.1% zinc sulfate solution is applied. According to another report, applying zinc fertilizer to tomatoes can increase production by 2.7% to 24.5%, and zinc content in edible parts can increase by 0.178 mg/g.
In molybdenum-deficient tomato, when the molybdenum is deficient in molybdenum, the old leaves will be whitish green first, and the leaf between the leaf margin and leaf veins will be yellow spots. The leaves will curl upward and the tips of the leaves will be atrophic and gradually move inward. The light will affect the flowering and the death will be serious. Prevention and remedial measures: In the tomato growing period or when molybdenum is found to be lacking, spray with 0.01% to 0.1% ammonium molybdate solution.
How to remedy the lack of trace elements in tomato?
Trace elements have an irreplaceable effect on the growth and development of tomato. Once a certain trace element is lacking, it will show the corresponding deficiency symptoms through the external shape of the plant. Production is often used as a basis to diagnose the deficiency and take remedial measures. .