Proteins carry a charge that changes with pH, but becomes negative in the presence of certain chemical detergents.

蛋白质随着PH值不同携带不同电荷，但当某些化学试剂存在时会带负电荷。

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It's used in mining, steel production, oil refining and chemical synthesis, and in the manufacture of fertilisers, detergents and plastics.

它被用于采矿、炼钢、石油精炼化工，以及制造化肥、洗涤剂和塑料。

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Do not wash or clean the machine with strong chemical reagents or strong detergents. Clean the dust with a soft cloth. Wipe the stains with alcohol cotton ball gently.

不要用腐蚀性化学试剂、强洗涤剂清洗或擦拭仪器，请用软布擦拭仪器灰尘，如有污点请用酒精棉球轻轻擦净。

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Warwick, the world's leading producer of a chemical additive in household detergents, employs 230 at its main manufacturing site and headquarters, and will use the Shanghai base to develop its business further in the growing Chinese market.

BBC: NEWS | UK | Wales | Morgan unveils Shanghai offices