Which is better, Changzhou lithium source or lapping?

Changzhou has a lot of research. According to relevant data, Jiangsu Changzhou jingyan technology co., ltd. has an independent office, which is cleaned every day, with basic facilities such as air conditioning and water dispenser, and the environment is very good. The salary of employees is about 5,500 yuan, and there are separate gifts for each holiday, including five insurances, one gold and paid vacation. Changzhou Liyuan New Energy Technology Co., Ltd. has no paid vacation, which is not good.