Unlike some manufacturers that pursue a low-price, high-volume strategy, xTool has emphasized high power, high precision, and integrated hardware-software systems since its founding, with average selling prices typically 10%—30% higher than the industry. Early on, this positioning helped it quickly establish brand differentiation and secure ample room for premium pricing.
By the time Sanger sequencing was commercialized, the groundwork for an entirely new sequencing chemistry was already well underway. In 1985, Swedish biochemists Pål Nyren and Arne Lundin published a paper illustrating a procedure that measured the concentration of a molecule, called pyrophosphate (PPi), using an enzymatic cascade that emits light. In early 1986, Nyren realized that the method he’d helped develop could be applied to DNA sequencing, because PPi is naturally produced as a byproduct of DNA synthesis.5，这一点在谷歌浏览器下载中也有详细论述
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