Ming Ming Han

APT Electronics Co., Ltd. engages in the research, development, production and sales of light emitting diode (LED) packaging devices and application products. Its products include automotive, horticulture, mini LED, backlight, general lighting, and special lighting series. The company was founded by Ching Ho Chan and Guo Wei Xiao on August 30, 2006 and is headquartered in Guangzhou, China.

Kontour (Xi'an) Medical Technology Co., Ltd. engages in the research and development, production, and sales service of three types of implanted medical devices. Its products include neurosurgery products, cardiothoracic surgery products, neurospine products, and oral implant system. Its products are used in neurosurgery, skull repair, and cardiothoracic surgery. The company was founded by Li Ren Hu, Li Gong Hu and Di Yuan Huang on March 14, 2005 and is headquartered in Xi'an, China.

Xi'an Tianli Clad Metal Materials Co., Ltd. engages in the manufacture, research and development of clad metal plates and titanium alloy materials. The company's products include titanium-steel, stainless steel, zirconium-steel, tantalum-steel and silver-steel. The company was founded on December 25, 2003 and is headquartered in Xi'an, China.

Beijing Bio-Top Biotechnology Co., Ltd. engages in the research and development, manufacture, and sale of in vitro diagnostics. Its products include hydroxy vitamin D, anti cyclic citrullinated peptide, heart fatty acid binding protein, procalcitonin, neutrophil gelatinase associated lipocalin, prospepsin, cardiac troponin 1, myoglobin, nonesterified free fatty acid, and cholyglycine. The company was founded on October 20, 2009 and is headquartered in Beijing, China.

Baimtec Material Co., Ltd. engages in the research and development, production, and sale of aviation and aerospace components and materials. It operates through the following segments: Titanium Alloy Precision Casting, Rubber & Sealing Materials, Aircraft Cockpit Transparent Parts, and High Temperature Alloy Casting. The Titanium Alloy Precision Casting segment manufactures aviation and aerospace titanium alloy castings, which are used in aero-engine intermediate casings and compressors. The Rubber & Sealing Materials segment produces elastic components and shock absorbers, which are used for vibration damping devices in helicopter rotor systems, aerospace, and other fields. The Aircraft Cockpit Transparent Parts segment offers plexiglass and inorganic glass transparent parts such as organic integral arc windshield and bubble-type cockpit cover. The High Temperature Alloy Casting segment manufactures various super alloy products which are used in the production of aero-engine turbine blades and guide vanes. The company was founded on April 10, 2000 and is headquartered in Beijing, China.