This standard specifies in detail the type of climate protection, environmental conditions of use, test methods, inspection rules, signs, Encasement, transportation and storage and protection requirements for mechanical products used in warm-moist climate conditions. It is applicable to a variety of mechanical products such as agricultural machinery, internal combustion engines, Engineering machinery, etc., and aims to ensure their Reliability and durability in warm-moist climate areas. The standard does not apply to products with chemical corrosion, explosion hazard or special environment conditions. This standard provides important technical guidance to ensure that products can operate safely and reliably in heat and humidity environments. This guide highlights the scope, main content, and purpose of the standard, and helps to understand and apply it to the design, manufacturing, and testing of practical mechanical products.