How to choose the appropriate anti-static grade for the rubber disc?

Resistive capacitance 0402/0603, ordinary passive components: insulated blue and white PS disk
Ordinary SOT and SMD LED: coated with anti-static black disk (short effect sufficient)
IC products: permanent anti-static discs made of raw materials mixed with carbon black
2. Internal factory circulation (repeated use)
Universal PCB component: ABS dissipative disk with carbon black added inside
Automotive and New Energy Precision Components: Carbon Fiber Modified ABS Conductive Disk
It is prohibited to use external coated discs for internal turnover, as the anti-static function may become ineffective after wear and tear.
3. Harsh environmental conditions
Drying workshop (humidity<40%), northern winter, air-conditioned dust-free workshop
External anti-static adhesive discs are strictly prohibited, and all materials are used to add carbon black/carbon fiber permanent anti-static discs.
High temperature SMT loading area, near reflow soldering
PS coating with high temperature and rapid failure, switch to ABS/PC with anti-static adhesive disc inside.
Quick matching rules for matching carrier tapes
Paper tape+resistance capacitance → insulation blue and white disk
Hot pressed PS carrier tape (SOT/LED) → dissipative anti-static black disk
Vacuum formed PET/PC deep cavity (connector/automotive IC) → conductive grade black disk
Minimalist Selection Formula
Passive small components without chips → Insulation disk;
Ordinary IC semiconductor → dissipative anti-static disk;
BGA vehicle specification sensitive components → conductive disk;
Dry/high temperature/turnover → permanent anti-static should be added internally, and external coating should not be selected.