जेव्हा लोक दिवे विकत घेतात, तेव्हा ते आपोआप ऊर्जा-बचत करणारे दिवे निवडतील, जेव्हा ते कार निवडतील तेव्हा ते पर्यावरणास अनुकूल कार निवडतील आणि मशीन्स निवडताना कंपन्या ऊर्जा-बचत उत्पादनांकडे अधिक झुकतील...
पुढे वाचाSimple brushing can only remove about 65% of the plaque, and the remaining 35% of the plaque is hidden in the adjacent surface of the teeth (interdental), under part of the gingival margin, and in the dead corners caused by the misalignment of the teeth. It contributes a little to cause caries and p......
पुढे वाचाToothbrushes are distinguished by their bristles, and there are two types of toothbrushes, soft bristles and hard bristles. The bristles of soft bristles are very soft, thin and dense, while the bristles toothbrushes are just the opposite, with harder bristles. It's relatively thin, but also very sp......
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