西西人体WWW44RT大胆高清,先锋影音av资源站av,亚洲精品无码mv在线观看网站,在线视频网站www色,中文字幕久久精品无码一区二区

Welcome to [ Danyang Jincheng Medical Rubber & Plastics Co., Ltd. ] official website!

HOTLINE:+86-13806105756

NEWSReal-time news, always in control
Company newsIndustry trends
Sep15
Introduction to the composition and structure of rubber

Natural rubber is made of latex, and some of the non-rubber components contained in the latex remain in the solid natural rubber. Generally, natural rubber contains 92%-95% rubber hydrocarbons, while non-rubber hydrocarbons account for 5%-8%. ...

Sep15
Note the use of heparin cap

1. The injection parts used for infusion (blood) products must be cleaned with water for injection and dried in a 100,000-level purified environment before use. If the small package is found to be damaged or the bacterial endotoxin test is fou...

2 record 1/1 page