Spare parts: according to the wear law and service life of the equipment, a certain number of easily worn spare parts and key parts are reserved, including outsourced standard parts and self-made machined parts.

Legal basis:

People's Republic of China (PRC) standardization method

Article 2 Standards (including standard samples) mentioned in this Law refer to the technical requirements that need to be unified in agriculture, industry, service industry and social undertakings.

Standards include national standards, industry standards, local standards, group standards and enterprise standards. National standards are divided into mandatory standards and recommended standards, while industry standards and local standards are recommended standards.

Mandatory standards must be implemented. The state encourages the adoption of recommended standards.

Article 3 The tasks of standardization work are to formulate standards, organize the implementation of standards and supervise the formulation and implementation of standards.