Yesterday, the Consumer Electronics Survey Office of the China Electronic Chamber of Commerce released the first surface television evaluation standard.
The "Curved TV Display Performance Measurement Solution" discusses the measurement of display performance such as brightness, contrast and viewing angle of curved TVs, and clarifies the method of testing curved TV radius of curvature. Wu Weihua, director of the inspection office of the National Radio and TV Product Quality Supervision and Inspection Center, said that after the TV screen is bent, part of the measurement methods of the original TV performance are no longer applicable. Curvature radiuses of curved TVs currently on the market are mostly in the range of 4000mm to 6600mm. In the future, there will be smaller curvature radius products available.
Lu Jiebo, deputy secretary-general of the China Electronic Chamber of Commerce, pointed out that the radius of curvature depends on various factors such as panel size and material quality. It is not possible to judge the merits of television viewing results by the size of the radius of curvature alone. You must first go to the store to see if there is a wider perspective and a more comfortable visual experience.
Doorbell speaker is a kind of micro speaker unit which uses a diaphragm made of Mylar material. Doorbell speakers are of ultrathin design and lightweight and clear voice. It is widely used in building security industry (e.g. intercom, video door phone, intelligent door control..)
There are two types of Mylar speakers from the shapes:
1) Round shapes, we have products from 10mm to 57mm in diameter.
2) Oblong shape, we have products in sizes of 1510/1712/1813-..
Q1. What is the MOQ?
XDEC: 2000pcs for one model.
Q2. What is the delivery lead time?
XDEC: 15 days for normal orders, 10 days for urgent orders.
Q3. What are the payment methods?
XDEC: T/T, PayPal, Western Union, Money Gram.
Q4. Can you offer samples for testing?
XDEC: Yes, we offer free samples.
Q5. How soon can you send samples?
XDEC: We can send samples in 3-5 days.
Doorbell Speaker,Doorphone Speaker,Video Doorphone Speaker,Doorbell Wireless Speakers
Shenzhen Xuanda Electronics Co., Ltd. , https://www.xdecspeaker.com