It is understood that taxation is a duty that every citizen and enterprise should perform. The Ministry of Commerce and the General Administration of Customs of the People's Republic of China issued a joint announcement in recent days stating that in order to actively respond to the effects of the financial crisis and maintain steady growth in foreign trade, China will adjust the categories of processing trade restrictions and prohibitions. Starting from February 1, next year, import taxation policies for copper, nickel, cobalt ore and its concentrates will be resumed. According to the announcement, 1,730 ten commodity codes were excluded from the restricted category, specifically related to textiles, plastics (7540, 355.00, 4.94%, bar) products, wood products, hardware products, etc., accounting for processing trade restricted products. Of the total, 77% involved processing trade exports worth about US$30 billion. Twenty-seven commodity codes, including copper, nickel and aluminum products, were excluded from the prohibited category, involving exports of processing trade of approximately US$1.5 billion, accounting for 30% of the total amount of prohibitions. Next year, the tax exemption policy for bathroom hardware will be restored and further development will be promoted. Calcium Fluoride Plano-concave Lenses
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Our company can produce many kinds of flat convex Spherical Mirrors with different sizes, radii and base materials, flat convex spherical Mirrors, flat concave spherical mirrors, double convex spherical mirrors, double concave spherical mirrors, meniscus spherical mirrors and other ordinary spherical mirrors. Special spherical mirror can also be processed, such as: achromatic spherical mirror, aspheric surface and spherical mirror group.
Calcium Fluoride Plano-Concave Lenses,Laser Optical,Optical Lens For Diving Mask,Optical Lens For Dvd Player Gold Dragon Optics Electronic Technology CO.,Ltd , https://www.golddragon-optics.com
Materials: optical glasses such as flint glass, ultraviolet fused quartz and infrared fused quartz, as well as optical crystal materials such as calcium fluoride (CaF2), germanium (Ge), Zinc selenide (ZnSe) and silicon (Si)
Focal length: ±5mm -- ±1000mm±1%
(Germany TIROPTICS OPTOMATIC2000 test)
Outer circle: 4mm -- 200mm±0.1mm
Center thickness tolerance: ±0.1mm
Center deviation: 3-5 points
Surface accuracy: /2@
Surface quality: 40/20
Effective diameter: 90%
Plating film: according to customer requirements can be coated
In addition, we have more than a thousand kinds of standard products, and some of the standard products in stock to meet your needs
