High strength, can withstand the load for a long time;Compared with the metal, the composite material has low hardness and no damage to the grinding parts;Antistatic, flame-retardant, crack resistance and flexural strength of good performance, not easy aging, light weight, corrosion resistance, low cost. Antistatic-linked antistatic and flame retardant components are evenly distributed in the hook body, so the antistatic and flame retardant performance indicators will not be affected by time.