Currently, BIS certification is divided into three categories:

1. Mandatory ISI mark type certification (product testing + initial factory inspection + post-certification supervision), mainly including cement, food, automotive parts, steel products and other categories;

2. BIS mandatory registration system (CRS) (product testing + post-certification supervision), mainly including tablet computers, microwave ovens, wireless keyboards, printer power adapters, LED lights, lithium batteries, mobile power supplies, mobile phones and smart card readers, ≤10kVA uninterruptible power supplies/inverters, 32-inch and below rear projection/LCD/LED TVs, etc.;

3. The rest are BIS voluntary certifications, and products other than mandatory mark certification and registration certification can apply.