标题（Title） 一般不超过80个字符
quality ethyl methyl cellulose-hydroxypropyl cellulose on sales-hydroxypropyl methyl cellulose hpmc
（99 个字符）
关键词（KeyWords）一般不超过100个字符
quality ethyl methyl cellulose,hydroxypropyl cellulose on sales,hpmc hydroxypropyl methyl cellulose
（99 个字符）
描述（Description）一般不超过200个字符
Shanxi Zhicheng Cellulose Co., Ltd. began to develop and produce methyl cellulose and hydroxypropyl methyl cellulose in the late 1970s. Main product are like ethyl methyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose hpmc, etc.
（248 个字符）
