Based on this product's specifications, here are some alternatives and similar models
Tempered full-surface protective glass Riff for Samsung Galaxy S21 (G991) with UV lamp and nano glue
Summary description:
Full-surface protective glass by Riff designed for Samsung Galaxy S21 (model G991). The kit includes a tempered glass screen protector, a UV lamp for curing, and nano glue for edge-to-edge adhesion. Provides full-coverage protection against scratches and minor impacts while preserving touch sensitivity and screen clarity. Intended for professional or careful DIY installation to achieve a seamless bond and long-lasting protection.