In international trade, timber is widely used as a packaging material, and currently it cannot be completely replaced by other packaging materials. After China's accession to the WTO, under diversified free trade, the amount of wood-based packaging materials used in import and export goods is expected to continue to increase. To address the spread of quarantine pests through wood-based packaging materials internationally, China should actively collect relevant data from various channels. In addition to formulating and implementing import and export quarantine measures that comply with international standards in accordance with ISPM 15 guidelines, relevant risk assessments should be conducted to thoroughly understand the impact of potentially significant quarantine pests. For example, if the Asian longhorn beetle were to enter China, besides potentially causing serious damage to Taiwan's vast forests and economic plants, the impact on the entire country's environmental ecology and economy should also be analyzed. This includes the potential for biodiversity disasters, increased production costs, and social losses such as unemployment or work stoppages. We should carefully conduct risk assessments to address the various challenges caused by quarantine pests. APHIS (2003) analyzed the impact of implementing ISPM 15 regulations, which is worth considering for China.
In addition to strictly enforcing quarantine measures, we should strengthen detection and monitoring of potential invasion routes for timber pests of quarantine importance, and improve relevant network systems. For species that are difficult to identify, rapid diagnostic identification methods should be developed, and frontline quarantine personnel should be trained to identify these pests. Furthermore, relevant personnel need to understand and learn the technology of fumigation quarantine treatment for timber packaging materials. Whether we have suitable fumigation facilities and equipment, and whether our personnel have adequate knowledge and operational skills regarding such technologies and methods, are currently very important issues. The fumigant methyl bromide has been banned in developed countries since 2005, and international efforts are actively developing alternative chemical or physical methods (Fields and White, 2002). Since timber packaging materials pose a risk of carrying pests, and fumigation or other chemical treatments cause environmental pollution, using synthetic materials, metal frames, fiberboard, and other similar non-timber packaging materials as alternatives can also reduce quarantine risks.
As mentioned earlier, the quarantine issues caused by the invasion of the Asian longhorn beetle into the United States have had a wide-ranging impact, even affecting Taiwan. Taiwan has no recorded distribution of the Asian longhorn beetle to date, but there are approximately 11 species in the genus *Anoplophora*. Although species closely related to the Asian longhorn beetle do not harm timber used for packaging, the geographical proximity between Taiwan and China has led quarantine authorities in many countries to classify Taiwanese products as subject to mandatory quarantine, imposing restrictions and controls, and requiring Taiwan to strengthen its quarantine measures, causing disruptions to Taiwanese exports. Furthermore, Taiwan is often considered part of China. Therefore, many countries assume that if quarantine pests are found in a few provinces in southeastern mainland China or on Hainan Island, Taiwan must also be an epidemic area. Without proper information, they list Taiwan as a suspected country. Therefore, we should organize an expert group as soon as possible to conduct an assessment and carry out a comprehensive survey of the quarantine pests listed in the international list, including closely related species. Experts should submit appropriate research reports in advance to confirm that these important quarantine pests do not exist in Taiwan, Penghu, Kinmen, and Matsu, so as to take timely measures.
