A/HRC/31/71 She notes, however, the lack of detailed information relating to the jade industry, estimated to account for up to 48 per cent of the State’s total gross domestic product, 10 including on beneficial ownership and contract terms. She calls for the release of such information, which could help to tackle corruption in the sector. The new Government should also consider reviewing existing legislation and regulations to ensure that they include transparency requirements and environmental, social and human rights protection. 70. Private companies have a responsibility not to cause or to contribute to human rights abuses. The Special Rapporteur therefore welcomes the increasing awareness of human rights in some companies in Myanmar, and notes that several have now adopted human rights policies. She encourages all investors and businesses proactively to ensure that they abide by the Guiding Principles on Business and Human Rights, as well as other relevant standards, such as the Voluntary Guidelines on the Responsible Governance of Tenure of Land, Fisheries and Forests in the Context of National Food Security of the Food and Agriculture Organization of the United Nations. She also encourages the Government to develop, following consultations with relevant government departments, civil society and the private sector, a national plan of action on business and human rights. 71. Drug addiction is an underreported phenomenon, and one of increasing concern, particularly in conflict-affected Kachin and Shan States. The Special Rapporteur heard concerns about the increased availability of drugs and the severe impact on the health and livelihoods of those affected, particularly youth. She therefore welcomes the permission recently given to the United Nations Office on Drugs and Crime (UNODC) to conduct the first national drug use survey. She is concerned, however, at new reports of community “vigilante” groups discriminating against or calling for extreme measures against drug users, such as public caning. The use of amphetamine-type stimulants in parts of Myanmar has more than tripled in recent years 11 and treatment options are severely limited. Although production has stabilized, Myanmar remains the second largest producer of opium in the world,12 with poverty and continuing conflict driving poppy cultivation. Steps should be taken to improve the treatment options available for drug users, and efforts to tackle production should ensure long-term sustainable development for farmers. G. Engagement with the international human rights system 72. The Special Rapporteur welcomes the ratification by Myanmar of several instruments since 2011, including the Convention on the Rights of Persons with Disabilities, the Optional Protocol to the Convention on the Rights of the Child on the sale of children, child prostitution, and child pornography, and recently the Convention on the Prohibition of the Development, Production, Stockpiling and Use of Chemical Weapons and on Their Destruction. In 2015, Myanmar also became a signatory to the International Covenant on Economic, Social and Cultural Rights and the Optional Protocol to the Convention on the Rights of the Child on the involvement of children in armed conflict. She urges the new Government to ratify both instruments quickly, and welcomes the assurances of the Ministry of Foreign Affairs that priority will be given to these treaties. The Special Rapporteur also welcomes the Government’s decision to join the Group of Friends of the Convention against Torture Initiative and the efforts to have the Convention translated. She hopes this will be followed by early ratification. She also urges the new Government to sign and ratify the International Covenant on Civil and Political Rights, 10 11 12 16 Global Witness, Jade: Myanmar’s “Big State Secret”, October 2015, p. 6. UNODC, Southeast Asia Opium Survey 2014, p. 49. UNODC, Southeast Asia Opium Survey 2015.