Where a commodity still cannot be used properly after being repaired twice within the guaranteed maintenance period, the business operator must be responsible for replacement or return.
在保修期内两次修理仍不能正常使用的，经营者应当负责更换或者退货。
2
Automatic replacement of solvents and waste discharge to avoid escape of toxic reagents, ensuring the operator and environmental safety.
自动更换溶剂和排出废液，避免有毒试剂外逸，保证操作人员及环境安全。
3
Since these must be fully operational 365 days a year, the replacement of prematurely worn belts and sprockets is, understandably, a major inconvenience for the operator.