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Shanghai Rongjida Instrument Technology Co., Ltd. ** operates cement experiment equipment, concrete experiment equipment, highway geotechnical experiment equipment, dry mortar thermal insulation mortar experiment equipment, asphalt waterproof material experiment equipment, paint coating experiment equipment, non-destructive testing and other experimental equipment. ** Operating cement experiment equipment, concrete experiment equipment, highway geotechnical experiment equipment, dry mortar thermal insulation mortar experiment equipment, asphalt waterproof material experiment equipment, paint coating experiment equipment, non-destructive testing and other experimental equipment. Company products rely on excellent quality, perfect after-sales service, reasonable prices sell well in major universities, testing units, building materials enterprises, engineering construction units. It enjoys a high status and a good reputation among consumers, and has customers in nearly 30 provinces, cities, and autonomous regions in China, and has been exported to foreign countries. It has established long-term and stable cooperative relationships with users. The strength of the company, credit and contract compliance. Have a sound management system and a sound quality management system. And has a responsive and thoughtful after-sales service system. We will make unremitting efforts to serve our customers with excellent quality as always.
一、 反光膜耐冲击测试装置执行标准：
STT-920 反光膜耐冲击测试装置是按照中华人民共和国国家标准GB/T18833-2002《公路交通标志反光膜》中反光膜耐冲击试验方法研制生产的。该设备具有操作简洁直观，是生产及质量监督检验部门的设备。
I. Reflective film impact resistance test device implementation standards:
STT-920 reflective film impact resistance test device was developed by Shanghai Rongjida Experimental Instrument Co., Ltd. according to the national standard GB / T18833-2002 "Highway Traffic Sign Reflective Film". The equipment has simple and intuitive operation, and is the equipment of production and quality supervision and inspection department.
二、反光膜耐冲击测试装置性能特点：
本仪器是利用钢球自由落体原理来为生产及质量监督检验部门测定反光膜耐冲击的性能而设计的。
Performance characteristics of reflective film impact test device:
This instrument is designed to determine the impact resistance of the reflective film by the production and quality supervision and inspection department using the principle of free fall of the steel ball.
三、反光膜耐冲击测试装置技术参数：
主要技术指标：
钢球质量450±3克，
钢球落差250毫米。
由合金铝，有机玻璃板和钢板构成
Third, the technical parameters of the reflective film impact test device:
Main Specifications:
The mass of the steel ball is 450 ± 3 grams,
The drop of the steel ball is 250 mm.
Composed of aluminum alloy, plexiglass plate and steel plate
