Services >> FAQ 
Contact Us


Office Address:

Unit 28 Yangtai Road, Xinyang Industrial Zone, Haicang District,Xiamen,China

Service Phone:



[email protected]


How efficient are led bulbs compared to incandescent bulbs?

The efficacy of the newer led light bulbs is more than five times higher than comparable incandescent bulbs. In other words, led light bulbs use only about 20% as much electricity to produce the same amount of light. However, because led bulbs direct a larger percentage of light where it is needed, in many applications they are as much as ten times as effective as incandescent bulbs, reducing energy use by 90%.

Are bulbs with more leds brighter than bulbs with less?

The number of leds is not the determining factor of bulb brightness. Different types of leds vary greatly in size and light output. The most accurate indicators of the brightness of LED bulbs are the measured lumens or lux. Lumens measure the total amount of light output from a bulb. Lux measures how bright the light is on a surface at a specified distance.

What is the difference between Stabilized and Initial?

LEDs work best when they are cool. It requires a certain level of power to turn them on (Initial) and they are at their brightest at that moment (again, Initial) because they are at their coolest. However, as they heat up, the LEDs produce slightly lower light output and consume slightly less energy. This is what we mean by Stabilized. Full stabilization occurs after 30 to 45 minutes.

How can we say that these lights last 50,000 hours?

Our lights actually last for much, much longer than 50,000 hours, but after that the light output begins to look a bit less than it was. It is accepted that the human eye will begin to notice a difference when the light output decreases to about 70% of its maximum. Using tested mathematical formulae, our technical team calculates when that 70% point is in hours – and that is the length of time we say our lights will last for.




Xiamen PVTECH Co., Ltd +86-592-2658881
Unit 28 Yangtai Road, Xinyang Industrial Zone, Haicang District,Xiamen,China

閩公網安備 35020502000080號

欢乐升级两副牌下载 26选5几点开奖 贵州十一选五遗漏数据查询 167棋牌游戏官网 足球现场当晚推介 河南十一选五怎么加盟 维秘赚钱排行榜 亚洲彩票网址 刮刮乐可看透的技巧 山西十一选五预测专家今天 竞彩足球高赔群 后一6码倍投需要多少本金 体彩排列3开机号试机号 山东十一选五号码遗漏 中国福彩大乐透走势图 吉林长春麻将玩法 004期曾道人说