�������Xi�An TOPTION INSTRUMENT CO., LTD ������� ���TOPTION INSTRUMENT CO., LTD was founded in 2007 with total area of more than 4000 square meters, which is located in Science and Technology Industrial Park, Gaoxin District, Xi�an City. It is an integrated company gathering development, production and sales with independent legal personality. Company aim is:Keeping credibility, honoring contract and providing the products with high quality and excellent performance. ���TOPTION INSTRUMENT CO., LTD respectively carries on R&D and production of �precision instruments� and �test infrastructure�, the brand for all products of the company is TOPTION. Since the establishment of the company, several series of a variety of products developed and produced:multi-function photochemical reactor system(UV, visible light, simulated sunlight, halogen light source, antimony light source and other different light sources), double glass reactor, three-layer glass reactor, rotyary evaporator system, chiller, low-temperature cooling liquid circulating device, low-temperature thermostatic bath, low-temperature cooling liquid circulating pump, high-precision low-temperature thermostatic bath, low-temperature thermostatic circulator, ultrasonic cell crusher, ultrasonic extraction equipment, ultrasonic materials emulsifying disperser, freeze-drying machine, snow ice machine, chromatography experiment refrigerator, ultrasonic cleaning machine, sterile homogenizer, incubator and drying oven, PCR instrument, electrophoresis apparatus and electrophoresis tank, membrane separation and purification equipments, spray drying equipment and other lab-equipments. Our products sell well around the world and gain good reputation in many universities and colleges and scientific research institutions. ���TOPTION INSTRUMENT CO., LTD has specialized temperature control technical personnel and advanced production equipments as well as perfect production process; establishes a complete quality management system to ensure product quality and achieve safe production; strives to produce the beautiful, practical, stable and cost-effective products and saves more experimentation space for our customers. We will always provide you with safe, stable and high-performance test equipments to make you more relaxed during the experiment. ���TOPTION wholeheartedly provides high-quality products and reliable after-sales service for research institutions, universities and colleges, drug testing, chemical industry, metallurgy, biochemistry and key food processing project. We sincerely service for you forever! ���We believe TOPTION will be your top option! ���