Against the backdrop of increasingly strict environmental management requirements for industrial parks, a large number of indoor warehouse districts have launched clear emission restriction rules for non-road mobile working equipment, to reduce the accumulation of exhaust pollutants in closed working spaces and protect the occupational health of on-site operators. For warehouse operation managers, choosing between Tier-4 forklift and electric forklift as the core material handling equipment has become a common decision-making difficulty.

As the upgraded internal combustion power equipment that meets the latest non-road machinery emission standards, Tier-4 forklift is equipped with a complete exhaust post-treatment system, which effectively reduces the emission of particulate matter, nitrogen oxides and other pollutants to the range allowed by regulatory requirements. For semi-open warehouse areas equipped with professional high-power exhaust ventilation systems, Tier-4 forklift can maintain stable power output even under long-time heavy load working conditions, and the fuel replenishment process can be completed within a few minutes, which is suitable for continuous high-intensity operation scenarios across multiple shifts. It should be noted that even with the optimized post-treatment structure, Tier-4 forklift will still produce a small amount of exhaust gas during long-term operation. If used in a fully enclosed indoor warehouse without special exhaust supporting facilities, the residual pollutants may gradually accumulate and exceed the local emission restriction threshold, and the engine operation will also generate a certain degree of noise, which has certain interference to the indoor working environment.

Electric forklift powered by on-board power battery, will not produce any exhaust emission during the whole operation process, which can fully meet the strictest zero-emission management requirements for closed indoor warehouse districts. The operation noise of electric forklift is far lower than that of internal combustion equipment, which will not affect the normal communication of on-site operators, and will not cause interference to high-sensitivity detection instruments placed in some special storage areas. With the continuous maturity of power battery technology, the current mainstream electric forklift can meet the normal handling needs of 6 to 8 hours of single shift after full charging, and the daily maintenance process only needs to check the circuit system, hydraulic transmission structure and tire wear condition, without the need to replace engine oil, clean the post-treatment device and other complex operation links, the annual maintenance cost is controllable.

When making specific selection decisions, warehouse operators can first confirm the detailed emission restriction rules of the district, and match the appropriate equipment according to the actual operating conditions. For fully enclosed core storage areas that implement 24-hour zero-emission management, electric forklifts can avoid additional supporting facilities such as on-board exhaust detectors, and will not trigger unexpected early warnings of environmental monitoring points. For semi-open heavy load operation areas that allow the entry of Tier-4 standard equipment, Tier-4 forklifts can give full play to the advantages of fast fuel replenishment, and adapt to the operation needs of non-stop heavy handling throughout the day. It is recommended that the operation team calculate the full life cycle cost of the equipment in combination with the local supporting conditions such as charging facilities and fuel supply, so as to select the material handling scheme that best matches the actual operation demand.