Dongguan Kejian Instrument Co., Ltd. is a professional company which concentrates on all kinds of material testing industries. The production base located in the country's manufacturing center - Dongguan, Guangdong province, China. In order to serve ...

Shanghai Yishi Instruments & Equipments Co., Ltd, is one of High-Tech enterprise mainly deals with environment test instruments. Our products including: Temperature tests, Ageing Mechanics tests and large comprehensive tests.We adhere to "test ...