Lianhuashan Rock Tools Co., Ltd (LHS) was established in 1969, originally under the China Nonferrous Metals Industry Corporation of the Ministry of Metallurgical Industry. In 2003, LHS transformed from a state-owned enterprise to a private limited liability company.Located in Huludao City, Liaoning Province, China, LHS occupies an area of 140,000 square meters and has digital production lines for a complete range of threaded drilling tools and DTH drilling tools. LHS became the first in the Chinese industry to export drilling tools to the international market in 1987 and the first in the Chinese industry to pass the ISO quality management system in 1996. By 2022, LHS has maintained its position as the top exporter in the Chinese drilling tool industry for 34 consecutive years.With over 50 years of development, LHS has consistently focused on drilling tools, accumulating profound experience in production and application. LHS has achieved industry leadership in comprehensive capabilities such as product technology, quality, productive capacity, supporting capability and innovative development. LHS has become a leading company in the Chinese drilling tool industry, a well-known domestic brand widely accepted internationally, and an important production and export base for rock drilling tools in China.