We supply metal structural bleacher system that suitable ourdoor, telescopic seating system, bleacher seating, stadium seating, stadium seating chairs.According to customer requirement, and depend on the site condition we supply 5 kinds of metal structural bleacher system, and 2 kinds of telescopic seating system
He second type is the 24-plate(abridged) edition used principally at factories and offices of transportation and other concered places of the purpose of conducting usual sample survery for color deficiency in a short space of time when hiring new employees.
The ishihara`s tests for colour deficency consist of four(4)different types, namely, the first type is the 38-plat(completed). The ishihara`s tests for colour deficency consist of four(4)different types, namely, the first type is the 38-plate(complete) edition, used principally by ophthalmologists in order to classify completely the bype of color dificiency. The second type is the 24-plate(abridged) edition used principally at factories and offices of transportation and other concered places of the purpose of conducting usual sample survery for color deficiency in a short space of time when hiring new employees. The third type is the 14-plate (concised)edition. On the average, charts of highest accuracy were selected from the 38 plate(complete) edition to conduct minimum examinations of color deficiency. The forth type is the 10-plate for unlettered persons edition or the test for colour deficiency for infants. Ishihara test :labware tech have stocks of 38 plate ishihara test chart books, for color deficiency: 38 plate book, price is usd170 each .
3.changeable and triac dimming led tracklight Dimmable Led Track Lighting Description Powerstar's dimmable led track lighting includes black and white finishes with advanced optics designed to provide ideal lighting quality while offering energy savings and long life advantages. Using a modular design with removable and interchangeable lighting components, the customizable and diverse lighting solutions of such dimmable led track lighting systems can be accessed very easily. Dimmable led track lighting can be used in a variety of applications such as retail stores, art galleries, residential areas, schools, museums, offices, hotels and healthcare. The advantage of such dimmable led track lighting is its flexible installation covering track mounting, suspension and ceiling mounting methods. General Information Power 35W Housing material Die-casting Aluminum housing Color Black/White Housing size 92x205mm LIGHT source brand Citizen/Luminus COB CCT 2700/3000/3500/4000/5000/5700k Driver Brand Boke/philips/Osram/Tridonic Beam angle 15-60 zoomable lens UGR 19 Warranty 5years Track adapter 2/3/4/6wires IP� Classs IP20 Qty/cartons 12PCS/CTN GW16Kg Carton size 42*32*31cm Lighting Feature power CCT(nom) Color rendering index SDCM NOM Luminous Flux(efficient ) light decay(10000hs) 35W 3000K CRI>80
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