【正文】
2 ? Mandatory 2022 ? Future Continued revisions Today at least 150 countries whose bined merchant fleets account for more than 98% of the world39。s gross tonnage use the IMDG Code as a basis for regulating sea transport of hazardous materials. The . Hazardous Materials Regulations authorize use of the IMDG Code as a means of pliance with the HMR when at least one segment of transport involves sea transport. China has bee a major exporter of dangerous goods with the growth of its chemical and fireworks industries. But its pliance with international dangerous goods transportation requirements has not kept up. Problems: ?Accidents ?Heavy f