Abstract: Weather-resistant light emitting diode (LED) assemblies, which prevent water and moisture from entering the LED assemblies, which may be integrated to form a display, so that images may be displayed on the display are provided. A waterproof light emitting diode (LED) assembly including an LED tile including one or more LED boards; and a power box, wherein each LED board includes an array of LEDs, and the LED tile and the power box are connected through a plurality of waterproof connector assemblies is provided. Each waterproof connector assembly comprises a waterproof connector plug and waterproof connector socket having an O-ring, wherein the waterproof connector having the O-ring cooperatively interfacing with the waterproof connector plug seals the waterproof connector assembly. A waterproof LED panel including a plurality of waterproof LED assemblies mounted on a LED panel frame is also provided.

Abstract: The present invention provides amine derivatives represented by formula I, its isomers, racemes or optical isomers, pharmaceutical salts thereof, its amides or esters, pharmaceutical compositions containing said compounds and the preparation methods thereof. The invention also relates to the use of the above mentioned compounds in the preparation of drugs for the prophylaxis or treatment of cardiovascular diseases, diabetes, bronchial and urinary smooth muscle spasm as well as ischemic and anoxic nerve injury. The above compounds can be used to treat hypertension, angina diaphragmatic, myocardial infarction, congestive heart failure, arrhythmia, diabetes, spasmodic bronchial diseases, spasmodic bladder or ureter diseases, and depression.

Abstract: The present invention provides amine derivatives represented by formula I, its isomers, racemes or optical isomers, pharmaceutical salts thereof, its amides or esters, pharmaceutical compositions containing said compounds and the preparation methods thereof. The invention also relates to the use of the above mentioned compounds in the preparation of drugs for the prophylaxis or treatment of cardiovascular diseases, diabetes, bronchial and urinary smooth muscle spasm as well as ischemic and anoxic nerve injury. The above compounds can be used to treat hypertension, angina diaphragmatic, myocardial infarction, congestive heart failure, arrhythmia, diabetes, spasmodic bronchial diseases, spasmodic bladder or ureter diseases, and depression.