英语翻译 (1)Both extendible handles PASSED our in-house cold crack test (repeated drops from a one-foot height at -20°C) without any apparent damage.The same quality materials could be used in the making of these extendible handles. (2)The thickness and overall quality of the plywood bottom boards is acceptable.The maker must the same quality on the next sample and on the entire production.. (3)Please have the maker guarantee that the PE boards will not be made with regrind plastics and the emulsifiers used will be stable in time to prevent them from becoming brittle during the warranty period. (4) The maker must guarantee that all materials and parts used in production will withstand cold to –20oC in good working condition. 帮忙翻译下.头大死了.