61 LED street lights in Songjiang, Shanghai, "go to work", illuminating citizens' travel safety roads, the Zhenhua community is close to the river channel, and there are no street lights on the west side of the small door . In order to solve the problem, 61 LED solar street lights were installed on the streets of Yueyang . These solar street lights converted solar thermal energy into electrical energy through photovoltaic panels. During the day, the solar panels charged the batteries, and at night the batteries supplied power to the light sources. , Even for 10 consecutive days of rainy and rainy days, it can be normally illuminated, which is both energy-saving and environmentally friendly, but also economical and practical
China Street Light Procurement Network http: //
Wood Screw: The thread on the wood screw screw is a special thread for Wood Screws that can be screwed directly into a wooden member (or part) and is used to fasten a metal (or non-metal) part with a through hole to a wooden member. This connection is also a removable connection.
1. Scope of application: for fixing wooden panels
2.Reference standard.
Hexagon head wood Screws: DIN571, GB102
Slotted round head wood screws: GB99
Slotted countersunk head wood screws: GB100
Slotted half countersunk head wood screws:GB101
Cross recessed round head wood screws:GB950
Hexagon Socket Head Cap Screw ,Hexagon Socket,Hex Socket Head Cap Screw ,Socket Head Screws
Kunshan Zhonggu Precision Hardware Co., Ltd. , https://www.zgfastener.com