Shenzhen Changfang Semiconductor Lighting Co., Ltd. shares of RMB common stock (A shares) will be listed on the Shenzhen Stock Exchange. The company plans to issue 27 million shares with a total issued share capital of 108 million shares. Among them, the number of offline issuance does not exceed 5.36 million shares, accounting for 19.85% of the number of issuances. The number of online issuances is the total amount of the issuance minus the final circulation of the net. The release date is expected to be March 12. Exhaust Fan, driven by the fan to rotate the air flow, so that indoor and outdoor air exchange of a class of air-conditioning appliances. Also known as ventilation fan. The purpose of the exhaust is to remove the indoor dirty air, adjust the temperature, humidity and sensory effects. Exhaust fans are widely used in homes and public places. Exhaust Fan 8 Inch Exhaust Fan, Exhaust Fan For Bathroom, Exhaust Fan For Smoking Room, Exhaust Fan For Kitchen Ningbo APG Machine(appliance)Co.,Ltd , http://www.apgelectrical.com
Shenzhen Changfang Semiconductor Lighting Co., Ltd. is mainly engaged in R&D, design, production and sales of LED lighting source devices and LED lighting products. 
Exhaust fan, also known as negative pressure fan, negative pressure fan and so on. Is the use of air convection can make the room has been in a negative pressure state, the formation of a suction, a steady stream of outdoor air, and exhausted indoor hot air, so as to achieve ventilation and ventilation, cooling effect.