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Jiangsu Wuxi Xikan Machinery Co.,Ltd mainly produces engineering exploration drills, core drilling machines, mud pumps and various geological tools. The product has six series and more than 30
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Taizhou Zheao Mould & Plastic Co.,Ltd: China plastic injection mould manufacturer, China mould maker, competitive mould price, good mould quality, on time delivery, more than 10 years cooperation with
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battery charging - Why are there 3 pins on some batteries ...
Why are there 3 pins on some batteries? ... the phone know whether the battery complies. ... How can they do the balancing with only one pin in cell phones?