Group 1 - The old standard electric vehicles have been completely banned for sale since December 1, following a three-month transition period, leading to a limited availability of new standard models in stores and a cautious consumer response [1] - New standard electric vehicles feature significant changes in appearance and materials, enhancing fire safety but also increasing prices, with new models generally appearing "thinner" due to the removal of plastic components [1] - The new standard requires that the total mass of plastic used in vehicles cannot exceed 5.5% of the total vehicle weight, resulting in a shift to metal components for improved fire performance [1] Group 2 - Retailers report low inventory levels of new standard electric bicycles, with a focus on electric motorcycles instead, as brands like Yadea and Tailg have increased prices by over 300 yuan compared to old standard models [1][2] - A store owner indicated that only two new standard vehicles were stocked due to uncertainty about their sales performance, with the new standard electric vehicle priced at 2980 yuan, reflecting higher production costs [2] - The market is witnessing a shift towards electric motorcycles, which are selling better than new standard electric bicycles, with some models achieving sales of over 10,000 units, while new standard bicycles have only sold in the dozens [2]