First look at the lock implementation standards Foreign countries have very strict standards for hardware locks, so the quality of imported products is relatively high. We can feel the quality of the locks. Generally speaking, the heavy lock has a relatively high quality; the lock body can not be pointed, and the tip is easy to injure, especially the lock handle end, the lock tongue and the lock body are three positions; the lock spring is good. Flexible opening, high sensitivity and long service life. There are also many styles of locks, so be sure to keep in mind the style of the interior doors. Second, look at the lock material The lock material on the market is basically divided into stainless steel, copper and zinc alloy. High-strength stainless steel, strong corrosion resistance, no discoloration, is the best lock material; copper is more versatile, mechanical properties are superior, and the price is higher; the lock high-quality zinc alloy is strong and wear-resistant, corrosion-resistant, and easy to form. Mostly used for mid-range locks. Look at the surface treatment of the lock again (home improvement supervision) The surface treatment is roughly divided into electroplating, spraying and coloring. The locks form a dense protective film on the surface of the product through surface treatment, which acts as anti-corrosion and anti-rust, making the lock more beautiful and durable. The dense protective film is also a standard for measuring the quality of locks. The locks of good quality are mostly plated, the coating is fine and smooth, even and moderate, the color is bright, and there are no signs of bubbles, rust and oxidation.
Phosphate Fertilizer is a Fertilizer with phosphorus as the main nutrient. The full name of Phosphorus Fertilizer. Rational application of phosphate fertilizer can increase crop yield, improve crop quality, accelerate grain crops to promote fullness of seeds, promote flowering results of cotton, melons, solanaceous vegetables and fruit trees, increase the rate of results, and increase sugar content of sugar beets, sugar cane, watermelon, etc. The oil content of rapeseed.
1. Minimize contact with the soil, and concentrate fertilization, such as strip application and acupoint application.
2, try to increase the chance of contact with the root system
3, reduce the fixation by soil iron and aluminum
Zinc fertilizer and phosphorus fertilizer
When zinc Zn Zn fertilizer and phosphate fertilizer are mixed together, zinc phosphate which is not easily dissolved in water is formed. The roots of crops are difficult to absorb and utilize. Therefore, when applying Zinc Sulfate, it is necessary to avoid contact with phosphate fertilizers such as superphosphate, heavy superphosphate, diammonium phosphate and Potassium Dihydrogen Phosphate, and it is not possible to mix them together.
The application of zinc sulphate as a base fertilizer can be carried out by uniformly mixing zinc sulphate with farmyard manure, and then applying phosphate fertilizer when planting. It is also possible to uniformly apply the phosphate fertilizer to the farmyard manure as a base fertilizer, and then apply zinc sulfate when planting. This creates a barrier between the zinc fertilizer and the phosphate fertilizer to prevent them from coming into contact with each other.
Phosphate Fertilizer Phosphorus Fertilizer,Potassium Dihydrogen Phosphate Fertilizer,Potassium Dihydrogen Phosphate,98% Potassium Dihydrogen Phosphate Jinan huijinchuan trading Co. LTD , https://www.hjcchemical.com