Home Certificate Our Certificates 1: In October 2010, named instrument as "Linshang" and successfully registered self-owned trademark "Linshang" 2: In June 2012, "a measurement instrument of three wavelength optical transmittance" applied for patent and obtained it. 3: In July 2012, applied for patent of "Digital Glass Thickness Meter", and obtained it. 4: In September 2012, applied for patent of "Solar Film Transmission Meter", and obtained it. 5: In July 2013, applied for patent of "Solar Film Transmission Meter", and obtained it. 6: In July 2013, applied for patent of "Heat-insulating Film Temperature Tester", and obtained it. 7: In November 2013, applied for patent of "vacuum coating online thickness tester", and obtained it. 8: In November 2013, applied for patent of "UV Energy Meter", and obtained it. 9. In 2018 received "Shenzhen High-tech Enterprise" certificates