Nowadays, there is a growing demand for mobile phones. Leisure, office and daily communication are inseparable from it, so the battery life of mobile phones has become particularly important. < / P > < p > the prompt sound of insufficient power is particularly “harsh”. I believe many small partners have such a question: why should we remind charging when the power reaches 20%? Let’s talk about it today= https://twhosting.com/american-companies-begin-to-give-up-r-d-who-should-pay-for-corporate-research/ target=_ blank>Continue ReadingAmerican companies begin to give up R & D: who should pay for corporate research?