FAQ1. Could you provide samples?Of couLifting Equipment rseIndustrial Adhesive Products , free samples can be sent to you, but please help us pay the freight fee.2. What Certification do you have for your optical lens?Roadway Safety FDPneumatic Tools A, CE, ISO9001 certification is available.3. What is the MOQ of optical lens?We dont have Min Order quantity requirement. But if the quantity order is too small, we have to charge extra delivery fee.4. Could you provide OEM service?Sure, just send us yourTime & Attendance requirements.