Which vehicles require biannual inspections?

[MacGabriel]

Vehicles requiring biannual inspections refer to those over 15 years old. Relevant information: 1. Regulations: Small and micro non-operational passenger vehicles (i.e., private cars) must be inspected every 2 years within the first 6 years; after 6 years, annually; after 15 years, twice a year, with emission tests conducted during the annual inspection. For new vehicles, the valid inspection date is noted for 2 years corresponding to the month of registration. 2. Materials required for annual vehicle inspection: the vehicle, complete original and duplicate copies of the vehicle license, valid third-party liability insurance policy with a 1-year validity period (for installment payments without the original policy, a copy stamped by the insurance company, insurance card, and explanation are required), identity proof and its copy. Note: both original and copy are needed, with the ID copy neatly trimmed along the edges. For company vehicles, the agent's identity proof is required.