Heilongjiang News Network News Harbin City Department of Industry and Commerce announced the results of special inspections on special safety protection products. Harbin Chengji Labor Protection Products Co., Ltd. sold 400 poor quality helmets at a price of 4.5 yuan. Its sales are under investigation and verification. On the 18th, experts from Harbin City Industrial and Commercial Bureau Consumer Protection Division and the Provincial Labor Safety Science and Technology Research Center formed a special rectification inspection team and went to the North Fourth Labor Supplies Store, Chengji Labor Protection Products Co., Ltd., and the Sinopec Economic and Trade Co., Ltd. in Daozou Street, Daowai District. Companies and other labor insurance products distribution companies conducted inspections and found that Harbin Chengji Labor Protection Products Co., Ltd. sold 400 poor quality helmets at a price of 4.5 yuan, and their sales were verified during investigations. The Harbin-based industry and commerce department stated that high-frequency spot checks will be conducted on safety products in all markets in the near future.
Plane ruled gratings are characterized by a superior efficiency at their design wavelength compared with holographic gratings. Plane Ruled gratings comprise the majority of diffraction gratings used in spectroscopic instrumentation and are especially useful in systems requiring high resolution.
China star optics can provide customers with a variety of replicated grating products such as diffraction gratings, reflective gratings,holographic gratings,concave gratings etc. to meet different needs. Maximum ruled area is up to 300 x 300 mm for plane ruled diffraction gratings. For replicated diffraction and transmission gratings the ruling density can be from 20 grooves per millimeter to 2400 grooves per millimeter, wavelength from 0.2 micron to 25 microns.
Plane Ruled Grating,Plane Ruled Diffraction Grating,Plane Reflection Grating,Plane Ruled Reflective Grating China Star Optics Technology Co.,Ltd. , https://www.opticsrealpoo.com
Holographic gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 0.2-0.8um
Grooves per mm: 1,200 to 3,600L/mm
Diffraction: >70%
Ruled gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 0.2-15um
Grooves per mm: 50 to 2,400L/mm
Diffraction: >70%
Concave gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 200 to 900um
Grooves per mm: 490 to 1,200L/mm
Diffraction: >70%
