China Cylindrical Lenses,Plano Convex Lenses manufacturer, choose the high quality Fused Quartz Plano Convex Lenses,Diameter Fused Silica Optical Lenses, etc.Founded in 2014, Bena was co-founded by several experienced engineers who have more than 10 years of optical design, process, production and test. We provide customization service for high precision (rms = 1/100λ, λ=632.8nm), large diameter plane mirror (>500mm) and aspherical lens, as well as professional spherical lens (such as Optical Domes with diameter 280mm), involving different materials including K9, Silicon, Sapphire, SiC, glass ceramics, fused silica, and other various optical glasses, and we can also deal with the nickel-phosphorus alloy surface on different substrates. Cylindrical Lenses,Plano Convex Lenses,Fused Quartz Plano Convex Lenses,Diameter Fused Silica Optical Lenses Changchun Bena Optical Products Co., Ltd , https://www.benaoptic.com
For more content, please follow this site
Pakistan is an agricultural country with 90% of the agricultural population producing rice, wheat and cotton. Cotton is Pakistan's main cash crop and export resource. Pakistan’s cotton is grown mainly in the provinces of Punjab, Sindh and the Northwest Territories bordering India in the east. The two provinces are typical of a continental climate with a long frost-free period and good irrigation conditions in the Indus Valley. In addition, 70 to 90% of the crops during the growing season are fine weather. The maturation and harvesting seasons are basically free of rain. The superior natural conditions are conducive to the growth of cotton. , No frost, flowers, bluebells, good fiber quality. The above mentioned production is the largest in Punjab Province, accounting for about 55% of the national total, Sindh Province about 35%, and other cotton regions about 10%.
Pakistan's cotton has a short length, a lot of impurities, and a low grade (below SLM). However, since the early 1980s, Pakistan’s Central Cotton Council and its affiliated scientific research institutes have spared no effort in cultivating high-yield varieties to replace degraded old varieties, and paid attention to improving cotton processing conditions. In recent years, its quality has greatly improved.
Pakistan's cotton is free-growing. Farmers pick it by hand. The vast majority of cotton is directly supplied to nearby ginning factories. The purchase price is regulated by the market. The progress of the transformation of Pakistan's cotton processing technology is not fast, and at present, the processing of leather rollers accounts for nearly half of the total processing volume.
Pakistan's cotton is mainly 1467, AFZAL, ALAKA these three grades, AFZAL standard grade, length 26mm, micronaire value of 3.6 ~ 4.6, strong 25GPT or higher. Miscellaneous water is very large, more than three wires, can only spin low-ring ring spinning and rotor spinning.
Pakistan's cotton is divided into four types of short fiber (21 mm or less), medium cashmere (21-25 mm), and medium-long velvet (26-28 mm) long velvet (28-33 mm) in terms of fiber length. Mid-long velvet generally accounts for 60~70% of the total output.