Postmark Checker Detection

Postmarks are various types of stamps stamped by post offices on mail packages, including ordinary postmarks, commemorative postmarks, promotional postmarks, etc. Postmark verifiers are inspection tools that can quickly identify identity information on mail packages, such as identifying time, location, post office, subject, etc. Zhongke Testing provides postmark verifier testing services, and the report has CMA qualifications.

RoHS: Lead (Pb), cadmium (Cd), mercury (Hg), hexavalent chromium (Cr), polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs)
Physical properties: water absorption, density Mechanical properties: plastic deformation, compressive strength, Brinell hardness, Rockwell hardness, Vickers hardness, Izod impact strength, impact resistance test
Aging performance: high temperature test, low temperature test, temperature and humidity cycle test, mold test

"Directive on Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment"
GB/T 1034-2008 Determination of water absorption of plastics
GB/T 1033-2008 Determination of density of plastic non-foam plastics
GB/T 1451-2005 Test method for simply supported beam impact toughness of fiber-reinforced plastics
GB/T 7759.1-2015 Vulcanized rubber or thermoplastic rubber - Determination of compression permanent deformation - Part 1:
under normal and high temperature conditions GB/T 14153-1993 Drop weight impact test method for rigid plastics General rules
GB/T 2411-2008 Plastics and hard rubber Determination of indentation hardness (Shore hardness) using a durometer
GB/T 3398.2-2008 Plastics Hardness Determination Part 2: Rockwell Hardness
GB/T 2423.1-2008 Environmental testing of electrical and electronic products Part 2: Test methods Test A: Low temperature
GB/T 2423.34-2012 Environmental testing Part 2: Test method Test Z/AD: Temperature/humidity combined cycle test
GB/T 2423.16-2022 Environmental testing Part 2: Test methods Test J and guidance: Mold growth