What are the outsole standard of safety shoes？

The outsole selection of labor protection shoes is based on the region and working environment conditions. Different levels of base materials and anti-slip requirements are used in various environments. 

Common outsole materials include:

Polyurethane (PU) - Simple shoes are made with single-density polyurethane outsoles. 

Polyurethane/Polyurethane (PU/PU) - Dual-density injection molding technique is used to achieve both safety and comfort. 

Thermoplastic Polyurethane (TPU) - Single density TPU outsole alone cannot provide enough comfort.

Thermoplastic Polyurethane (TPU)/Polyurethane - It is a good combination that allows one-step production.

Rubber/Polyurethane (RU/PU) - Requires additional bonding processes.

Rubber/Rubber (RU/RU) - Commonly used in military boots and provides excellent anti-slip properties.

The selection of labor protection shoes should be based on the type and degree of hazards in the working environment. Instruction manual and product certificates should be read before use. Used shoes need to be cleaned and stored properly. Proper use and maintenance are important to ensure safety.