When facing a variety of products, well-known brands become some people’s first option since brands usually stands for its quality and advancement, having longer years of accumulations and researches.

When consumers are facing a variety of products, well-known brands are some’s first choice, as they, with years of production experience, are sold on better practicality and durability.

▲ 原文两处分词短语结构，分别充当时间状语（facing a variety of products）和原因状语（having longer years of accumulations and researches），但facing句的逻辑主语“people”和主句主语“brands”未保持一致，having句原因状语成分置于句末（位于句首更符合用语习惯）。

▲ 调整后，为时间状语添上主语consumers，设置with复合结构作原因插入在句中。

▲ since通常表已知的原因，句子重心放在主句上，因此调整成as引导的原因状语，侧重点偏移至所分析的原因上。

▲ advancement 提升/晋升，用词不准，修改为practicality and durability实用性和耐用性

▲ be sold on 以…为卖点