China has proposed tightening the rules for imposing anti-dumping and anti-subsidy tariffs, saying their use was rising and that such charges were often misused, and distorted international trade. China said it wanted to stop anti-dumping measures from “over-reaching” and becoming permanent, giving special consideration to small- and medium-sized firms, and imposing tougher standards for the use of such tariffs. The five-page proposal to the World Trade Organization (WTO) is unlikely to get the required unanimous support of the body’s 164 members, and may be flatly rejected by the United States, where Commerce Secretary Wilbur Ross has been a fierce critic of China’s trade practices. China is under fire at the WTO for fishing subsidies. China is accused of unfairly subsidizing a huge and far-flung fishing fleet and, together with India and Russia, has sought to link the WTO negotiations on fishing to a wider reform of the rules on using tariffs to counter unfair trade practices. Beyond fisheries, the United States has submitted a 584-page document to the WTO, spelling out many of the economic programs that Washington says China should have notified to the organization.