CHINA'S police force is in urgent need of improvements in salaries, resources and professional training, according to Vice-Public Security Minister, Mr Bai Jingfu. He admitted the overall standard and quality of mainland public security officers was not satisfactory. The police force was plagued with under staffing and lack of funds. Mr Bai made the remarks when meeting a group of Hongkong district board members on Saturday in Beijing. Mr Wong Chi-keung, head of the delegation, yesterday quoted Mr Bai as saying that the Public Security Ministry was working on ways to improve the quality of China's public security officers. ''China has a population of 1.1 billion, but we only have 800,000 public security officers. The proportion of police officers is too low in the total population,'' Mr Bai said. The under staffing problem had adversely affected the performance of the public security officers, he said. They were underpaid, earning about 100 yuan to 200 yuan (HK$135 to 270) a month. Equipment and technology was ''backward'', and that had affected the officers' overall performance, he said. ''Every year, several hundred officers are killed and several thousands are injured carrying out their duties,'' Mr Bai said. Working conditions and remuneration had to be improved to upgrade the quality of the force. He added that his ministry would strengthen training. ''We will introduce new rules to demand all public security officers receive professional police training before they start service,'' he said. ''All police officers must enter training schools and must pass examinations before being allowed to carry out duties,'' he said.