Galvanized Roller Shutter Door
Using advanced hot-dip galvanized material , precision roll forming production process, polyurethane foam that free of hydrofluorocarbon inside door, light weight, high strength, appearance nice. The doors have advantages of tamper anti-theft , noise isolation thermal insulation and corrosion resistance;the doors are widely used in shops, garages, houses, supermarkets, warehouses and industrial plants,etc.
Depending on the characteristics of the buildings,we can choose interior, exterior and intermediate three different installation ways, doors stay in the upper part of door after rolling up , this could save garage space, and also could keep the garage clean and beautiful by prevent the mud, rain and snow ,etc going into the garage.
Galvanized Roller Shutter Door,Standard Galvanized Roller Shutter Door,Automatic Galvanized Roller Shutter Door,Steel Roller Shutter Safe Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfgaragedoor.com
Huaxian County Shang Hongyan
The biogas slurry is taken out from the biogas digester, clarified, and the gauze is filtered and applied to prevent clogging of the sprayer. Spray once every 7-10 days. Generally, in the spring, autumn and winter, after the dew is dry (about 10 o'clock), it is better in the summer evening. Do not spray it before high temperature and heavy rain at noon. 1 part of the biogas slurry at the seedling stage plus 2 parts of clear water; high temperature in summer, 1 part of biogas slurry plus 1 part of clear water, lower temperature, and old leaves (miao), can be directly sprayed without adding water. The biogas slurry should not be mixed with alkaline fertilizers such as grass ash and lime to avoid loss of nitrogen fertilizer and reduce fertilizer efficiency.
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