Shenzhen Grandoor Electronic Co.,Ltd passed the inspection of global famous international inspection and authentication group: BV certification authority, and got the BV certification in March 2014, which was led by Alibaba, based on the Chinese suppliers. Bureau Veritas (BV) is one of the largest number of authentication companies and significantly reputation certification authority. The expert group did deep and clear research about the scale, human resources, quality control, vendor management, customer services, R&D, enterprise development program etc. of Shenzhen Grandoor Electronic Co.,Ltd, and affirm company’s site management, quality control, customer services, R&D etc. Shenzhen Grandoor Electronic Co.,Ltd will provide more [...]

As we all know, 395nm and 365nm UV flashlight is widely used, like glue curing, ink curing; money identification (RMB, USD, HKD, EUR, GBP); leaking risk check of air conditioning and the automobile circulation system; leaking risk check of special gas, oil and gas pipelines; testing the trace and blood for the police security, examining in the crime scene; exploratory tool of adventuring and outdoor hunting; antique appraisal; fluorescent reflective of special material etc.. So how do we use UV flashlight to check the oil and gas leaking? Mostly we use oil-soluble fluorescent to check the leaking, in a simple [...]

Uv flashlight irradiation not only can float, and fish to illuminate the violet light will be very excited, greatly increases the chance let night fishermen catch fish, so now the uv flashlight has become an essential tool for fishing at night. Huaian city canal bank a citizen with children were fishing at the sight, the citizens of the special equipment "professional", luminous float, flashlights, night fishing tools such as readily available, and fishing man's special equipment as a Zi GuangDeng attract many people watching., according to the man fishing there is the only light, the fish is easy to take [...]

Usually?the lithium polymer battery?(Li-ion)?of the electrical core?cathode?using LiCoO2,?LiNiO2,?LiMn2O2,?where LiCoO2?is a?layer?structure is very?stable polymorph,?but when?taking?XLi from?LiCoO2,?and its structure?may change,but?not?change depending on the?size of the X. Through the study found that the?structure?performance?when X>0.5?Li1-XCoO2 is?extremely unstable,?will?crystal?collapsed,?its external?manifestation ofoverwhelming?end for?electric core.?So the?electric core?should be controlled?in Li1-XCoO2?X?by limiting the?charging voltage?in the use process,?the generalcharging voltage?is not more than 4.2V,?then X?is less than 0.5,?then the?crystal type?of Li1-XCoO2 remains?stable. Overcharge?and?over discharge,?the positive and the negative?pole?of?lithium ion battery?causing?permanent damage,?from the molecular?level,?can intuitively?understand.?Excessive?discharge?will lead to?excessive?release ofcarbon anode?of lithium ion?and the?lamellar structure?collapse,?the?lithium iontoo many hard?into the?carbon anode?structure?to?over charge,?and makessome?lithium ion?cannot?release.?The control circuit?is one of the reasons?whyare usually equipped with?a lithium [...]

The outdoor sports increasingly high demands on the lighting tool, different outdoor activities, to the outdoor flashlight requirements are also different, such as search requires high brightness, radiation far, diving needs good waterproof performance, hiking need better endurance and good floodlight etc.. Therefore we can point the following to discuss how to choose appropriate outdoor flashlight. Suitable outdoor flashlight, outdoor activities can make more safety, more wonderful. ? 1.the performance is stable enough Requirements for outdoor exercise on a lighting tool is "readily available, functional enough", lighting tools of poor reliability, unable to work at a critical moment is fatal, [...]